Top Banner
8/16/2019 7th Grade Mental Math http://slidepdf.com/reader/full/7th-grade-mental-math 1/21 MM 7-1 1.  What is 3 hours after noon? (3 p.m.) 2.  What is 376 + 5? (381) 3.  Estimate 43 x 57. (2,400) 4.  What is 16/20 in simplest form? (4/5) 5.  What is 2 2 ? (4) MM 7-2 1.  What is 30 minutes after 4:45? (5:15) 2.  What is 410 + 135? (545) 3.  Estimate 37 x 82. (3,200) 4.  What is 14/5 in simplest form? (2 4/5) 5.  What is 3 3 ? (27) MM 7-3 1.  What is 5 hours before midnight? (7 p.m.) 2.  What is 400 – 35? (365) 3.  Estimate 290 x 58. (365) 4.  What is 20/4 in simplest form? (5) 5.  What is 3 2 ? (9) MM 7-4 1.  What is 15 minutes after 4:35? (4:50) 2.  What is 239 + 8? (247) 3.  Estimate 113 x 310. (30,000) 4.  What is 12/24 in simplest form? (1/2) 5.  What is 5 2 ? (25)
21

7th Grade Mental Math

Jul 06, 2018

Download

Documents

silkcity9253
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 1/21

MM 7-1

1. 

What is 3 hours after noon? (3 p.m.)

2. 

What is 376 + 5? (381)

3. 

Estimate 43 x 57. (2,400)

4. 

What is 16/20 in simplest form? (4/5)

5. 

What is 22? (4)

MM 7-2

1. 

What is 30 minutes after 4:45? (5:15)

2. 

What is 410 + 135? (545)

3. 

Estimate 37 x 82. (3,200)

4. 

What is 14/5 in simplest form? (2 4/5)

5. 

What is 33? (27)

MM 7-3

1. 

What is 5 hours before midnight? (7p.m.)

2. 

What is 400 – 35? (365)

3. 

Estimate 290 x 58. (365)

4. 

What is 20/4 in simplest form? (5)

5. 

What is 32? (9)

MM 7-4

1. 

What is 15 minutes after 4:35? (4:50)

2. 

What is 239 + 8? (247)

3. 

Estimate 113 x 310. (30,000)

4. 

What is 12/24 in simplest form? (1/2)

5. 

What is 52? (25)

Page 2: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 2/21

MM 7-5

1. 

What is 1 hour and 10 minutes after4:00? (5:10)

2. 

What is 16 + 45? (61)

3. 

Estimate 9 x 97. (900)

4. 

What is 15/18 in simplest form? (5/6)

5. 

What is 43? (64)

MM 7-6

1. 

What is 6 minus 4 tenths? (5.6)

2. 

What is 60 + 70? (130)

3. 

What times 10 equals 200? (20)

4. 

Round 543 to the nearest 100. (500)

5. 

What is 2,000 50? (40)

MM 7-7

1. 

What is 7 minus 5 tenths? (6.5)

2. 

What is 35 + 75? (110)

3. 

What times 7 equals 63? (9)

4. 

Round 476 to the nearest 10. (480)

5. 

What is 1,600 ÷ 40? (40)

MM 7-8

1.  Write 106 and 45 thousands. (106.045)

2. 

What is 40 + 17? (57)

3. 

What times 6 equals 54? (9)

4. 

Round 168 to the nearest 10. (170)

5.  What is 3,000 ÷ 6? (500)

Page 3: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 3/21

MM 7-9

1. 

What is 6 minus 4 hundredths? (5.96)

2. 

What is 80 + 50? (130)

3. 

What times 100 equals 1,000? (10)

4. 

Round 632 to the nearest 10. (630)

5. 

What is 1,200 ÷ 30? (40)

MM 7-10

1.  What is 3 tenths times 7? (2.1)

2. 

How many dimes are in $4.00? (40)

3. 

What do you call the answer when youadd two numbers? (sum)

4. 

What is 1,500 ÷ 50? (30)

5. 

Write 6 _ as an improper fraction. (27/4)

MM 7-11

1. 

What is 5 minus 3 tenths? (4.7)

2. 

What is 140 + 55? (195)

3. 

What times 8 equals 32? (4)

4. 

Round 799 to the nearest 100. (800)

5. 

What is 500 x 50? (25,000)

MM 7-12

1. 

What is 4 hundredths times 5? (.2)

2.  How many quarters in $6.00? (24)

3. 

What do you call the answer when youdivide two numbers? (quotient)

4.  What is 360 ÷ 4? (90)

5. 

Write 6 4/5 as an improper fraction.(34/5)

Page 4: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 4/21

MM 7-13

1. 

What is 6 tenths times 2? (1.2)

2. 

How many nickels in $3.00? (60)

3. 

What do you call the answer when you

subtract two numbers? (difference)

4. 

What is 400 x 9? (3,600)

5. 

Write 1 2/3 as an improper fraction. (5/3)

MM 7-14

1. 

What is 5 hundredths times 10? (.5)

2. 

How many dimes in $10? (100)

3. 

What is 130 – 80? (50)

4.  What is 3,500 ÷ 5? (700)

5. 

Write 1 2/9 as an improper fraction.(11/9)

MM 7-15

1. 

What is 3 tenths times 3? (.9)

2. 

How many nickels in $6? (120)

3. 

What is 65 – 40? (25)

4. 

What is 200 x 60? (12,000)

5. 

Write 6 _ as an improper fraction. (13/2)

MM 7-16

1. 

What is 5 tenths x 7 tenths? (.35)

2. 

What is _ of 24? (6)

3. 

What is 350 – 75? (275)

4. 

What is 7 + 12 + 5? (24)

5. 

How many candies in 3 1/3 dozen? (40)

Page 5: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 5/21

MM 7 – 17

1. 

What is 6 hundredths times 3hundredths? (.0018)

2. 

What is _ of 26? (13)

3. 

What is 65 – 30? (35)

4. 

What is 9 + 3 + 8? (20)

5. 

How many eggs in 3 dozen? (36)

MM 7-18

1. 

What is 3 tenths times 6 tenths? (.18)

2. 

What is _ of 48? (24)

3. 

What is 5,000 – 500? (4,500)

4. 

What is 7 + 9 – 4? (12)

5. 

How many cookies in 4 _ dozen? (54)

MM 7-19

1. 

What is 7 tenths times 4 tenths? (.28)

2. 

What is _ of 17? (8 _)

3. 

What is 720 – 110? (610)

4. 

What is 15 + 7 + 6? (28)

5. 

How many eggs in 5 dozen? (60)

MM 7-20

1. 

What is 7 hundredths times 4hundredths? (.0028)

2. 

What is 1/3 of 18? (6)

3. 

What is 600 – 140? (460)

4. 

What is 6 + 9 + 4 – 2? (17)

5. 

How many cookies in 10 dozen? (120)

Page 6: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 6/21

MM 7-21

1. 

What is 3/9 in simplest terms? (1/3)

2. 

What is the decimal for _? (.25)

3. 

What is $4.10 times 2? ($8.20)

4. 

60 x 80 = (4,800).

5. 

What is _ of $2? ($.50)

MM 7-22

1. 

8 oz. is what fraction of pound insimplest form? (1/2)

2. 

_ of 16 = (12).

3. 

What is 540 + 8? (548)

4. 

One minute 30 seconds equals how many

seconds? (90)

5. 

If 6 apples cost $.60 how much would 3cost? ($0.30)

MM 7-23

1. 

What is _ of 20? (15)

2. 

6 meters equal how many centimeters?(600)

3. 

How many 1/3’s in 2 1/3? (7)

4.  300 ÷ 6 equals (50).

5. 

What is 4 – 1 _? (2 _)

MM 7-24

1.  What percent of 60 is 30? (50%)

2. 

What is 6 times 4 ÷ 3? (8)

3. 

Round 365 thousandths to hundredths.(.37)

4. 

40 x 120 = (4,800).

5. 

What is 12 hundredths ÷ 2? (.06)

Page 7: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 7/21

MM 7-25

1. 

Joe had 60 stamps. He got 50 more fromhis uncle and 40 more from his aunt.How many does he now have? (150)

2. 

_ of 24 is (18).

3. 

6 oz. equals what fraction of a pound insimplest form? (3/8)

4. 

What is _ of 1/8? (1/16)

5. 

Candy costs 2 cents a piece. How manypieces can you buy for 60 cents? (30)

MM 7-26

1. 

What is 16/32 in lowest terms? (1/2)

2.  600 ÷ 4 = (150).

3. 

3 times 4 times 3 = (36).

4. 

What is the decimal for _? (.25)

5. 

What is 120 – 40? (80)

MM 7-27

1. 

How many inches in 2 yards 4 inches?(76)

2. 

6 x 9 x 2 = (108).

3. 

630 – 40 = (590).

4. 

What percent of 20 is 15? (75%)

5. 

120 ÷ 4 = (30).

MM 7-28

1. 

_ of 6 _ = (3 _).

2. 

6 x 2 x 5 = (60).

3. 

How many 1/5’s in 5 2/5? (27)

4. 

150 ÷ 5 = (30).

5. 

1/6 of 180 = (30).

Page 8: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 8/21

MM 7-29

1. 

What is 8/54 in simplest form? (4/27)

2. 

What is the decimal for 6/10? (.6)

3. 

540 ÷ 2 = (270).

4. 

6 meters equals how many centimeters?(600)

5. 

What is _ of 21? (10 _)

MM 7-30

1.  548 + 8 = (556).

2. 

125 x 2 = (250).

3. 

How many 1/6 are in 2? (12)

4. 

What is 4,200 ÷ 2? (2,100)

5. 

6 x 20 + 8 = (128).

MM 7-31

1. 

Sue has 12 horses. She sold _ of them.How many horses does she have now?(3)

2. 

What is 1/5 of 35? (7)

3. 

What is 13 – 2 _? (10 _)

4. 

What percent of 120 is 40? (33%)

5. 

What is 2/3 of 12? (8)

MM 7-32

1. 

What is 1.10 x 4? (4.40)

2. 

What is the decimal for 1/5? (.20)

3. 

What is 4 _ - 2 _? (2 _)

4. 

What is 18/24 in simplest form? (3/4)

5. 

120 x 20 = (2,400).

Page 9: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 9/21

MM 7-33

1. 

What is the decimal for 4/5? (.8)

2.  660 ÷ 3 = (220).

3. 

What is 180 x 3? (540)

4. 

What is 6 x 10 ÷ 2? (30)

5. 

What percent of 140 is 14? (10%)

MM 7-34

1. 

4 oz. is what fractional part of a pound?(1/4)

2. 

1/6 of 60 = (10).

3. 

What is 145 + 13? (158)

4. 

What is _ of 80? (20)

5. 

What is 5 x 11 + 13? (68)

MM 7-35

1. 

Round .138 to the nearest hundredth.(.14)

2. 

2/5 of 100 = (40).

3. 

90 x 3 + 30 = (300).

4. 

What is $1.30 x 4? ($5.20)

5. 

What is the decimal for 3/5? (.6)

Mm 7-36

1. 

What is 18/54 in simplest terms? (1/3)

2.  Round 67 hundredths to the nearest tenth(.7)

3. 

_ of 48 = (12).

4. 

63 x 2 = (126).

5. 

What is 2 x 12 x 2? (48)

Page 10: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 10/21

MM 7-37

1. 

8 oranges cost $1.20. How much would12 cost? ($1.80)

2. 

What is 339 + 8? (347)

3. 

What is 6 x 8 minus 4 x 2? (40)

4. 

_ of 120 = (90).

5. 

What is 9 – 2 _? (6 _).

MM 7-38

1. 

What is the decimal for 5/100ths? (.05)

2. 

What is 91 ÷ 7? (13)

3.  What is 640 ÷ 4? (160)

4. 

32 oz. is how many lbs? (2)

5. 

What is _ of 92? (46)

MM 7-39

1. 

How many 1/8ths in 8? (64)

2. 

66 + 66 = (132).

3. 

If 12 pears cost $1.20, how much would

18 cost? ($1.80)

4. 

What is 62 x 2? (124)

5. 

5 x 20 ÷ 4 = (25).

MM 7-40

1. 

What is 62 hundredths ÷ 2? (.31)

2. 

15 meters equal how many centimeters?(1,500)

3. 

What is 3 – 1/3? (2 2/3)

4. 

How many 1/7ths in 10? (70)

5. 

15 x 4 ÷ 4 = (15).

Page 11: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 11/21

MM 7-41

1. 

What is 2/3 of 66? (44)

2. 

62 = (36).

3. 

What is your change from $45 if your

purchase is $15.50? ($29.50)

4. 

What is the perimeter of a square with aside of 6 cm? (24 centimeters)

5. 

60 x 120 = (7,200).

MM 7-42

1. 

An increase from 16 to 24 is whatpercent increase? (50%)

2. 

Write an expression for 6 more than 4times a number. (4 x n + 6)

3. 

A triangle has a 45 degree angle and a 60degree angle. What is the missing angle?(75 degrees)

4. 

Write the fraction for 25%. (1/4)

MM 7-43

1. 

Children’s tickets sell for $3. Adulttickets sell for $6. How much would 3adult tickets and 3 children’s ticketscost? ($27)

2. 

60 ÷ 3 = (20).

3. 

A $20 shirt is reduced by 50%. What isthe new price? ($10)

4. 

Write thirty-seven and forty-eightthousandths. (37.048)

5. 

Write the formula for the area of a

square. (4 x side)

MM 7-44

1. 

John has a collection of quarters.Altogether he has $12.50. How many

quarters does he have? (50)

2. 

What number is halfway between 80 and50? (65)

3. 

43 = (64).

4.  If 12 pencils cost $2.40, how much do 6cost? ($1.20)

5. 

What is 1/5 of $1.20? ($0.24)

Page 12: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 12/21

MM 7-45

1. 

33 = (27).

2. 

What is your change from a $50 bill if your purchase is $30.50? ($19.50)

3. 

What is the perimeter of a square with aside of 6 _ feet? (26 feet)

4. 

30 x 30 = (900).

5. 

6 tenths plus 38 hundredths = (.98).

MM 7-46

1. 

625 + 9 = (634).

2. 

An increase from 4 to 12 is what percentincrease? (200%)

3. 

Write an expression for 2 more than 8times a number. (8 x n + 2).

4. 

A triangle has a 15 degree angle and a100 degree angle. What is themeasurement of the third angle? (65degrees)

5. 

Write the fraction for 55% in lowestterms. (11/20).

MM 7-47

1. 

Six loaves of bread cost 30 cents a loaf. 3pounds of butter cost 40 cents a pound.What is the total cost? ($3.00)

2. 

550 ÷ 5 = (110).

3. 

A $24 dress is reduced 25%. What is thenew price? ($18)

4. 

Write this number. Sixty-six and twenty-three thousandths. (66.023)

5.  Write the formula for the area of a

triangle. (1/2 bh)

MM 7-48

1. 

Joe has a collection of dimes. Altogetherhe has $4.40. How many dimes does hehave? (44)

2. 

What number is halfway between 99 and33? (66)

3. 

72 = (49).

4. 

If 6 pads of paper cost $6.60, how muchdo 12 cost? ($13.20)

5. 

What is 1/6 of $6? ($1)

Page 13: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 13/21

MM 7-49

1. 

What is the change from $10 if yourpurchase is $3.30? ($6.70)

2. 

What is the perimeter of a square with a

side of 15 ft.? (60 ft.)

3. 

25 x 5 = (125).

4. 

6 hundredths plus 24 thousandths =(.084).

5. 

987 + 13 = (1,000).

MM 7-50

1. 

An increase from 20 to 25 is whatpercent increase? (25%)

2. 

Write an expression for 7 more than 10

times a number? (10 x n + 7)

3. 

A triangle has a 15 degree angle and a 20degree angle. What is the measurementof the missing angle? (145 degrees)

4. 

Write the fraction for 25%. (1/4)

5.  Cats sell for $15 each. How much does it

cost for 6 cats? ($90)

MM 7-51

1. 

600 ÷ 5 = (120).

2. 

A $30 shirt is reduced by 50%. What is

the new price? ($15)

3. 

Write this number. Thirty-five and thirty-five thousandths. (35.035)

4. 

Write the area formula for a triangle. (1/2bh)

5.  Robbie has a collection of 50 cent pieces.He has saved $15 worth. How many 50

cent pieces does he have? (30)

MM 7-52

1. 

What number is halfway between 50 and150? (100)

2. 

9

2

 = (81).

3. 

If lettuce costs 55 cents a head, howmuch do 7 heads cost? ($3.85)

4. 

What is 2/3 of 75? (50)

5.  53 = (125).

Page 14: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 14/21

MM 7-53

1. 

What is the change from a $50 bill if youmake a purchase costing $19? ($31)

2. 

What is the perimeter of a rectangular

house with a length of 50 feet and a

width of 35 feet? (170 ft.)

3. 

90 x 90 = (8,100).

4. 

9 tenths plus 38 hundredths = (1.28).

5. 

673 + 9 = (682).

MM 7-54

1. 

An increase from 60 to 90 is whatpercent increase? (50%)

2. 

Write an expression for 8 more than 6times a number. (6 x n + 8)

3. 

A triangle has a 25 degree angle and a 50degree angle. What is the measurementof the third angle? (105 degrees)

4. 

Write the fraction for 40% in simplestform. (2/5)

5. 

Bananas sell for 60 cents each. Orangessell for 50 cents each. What is the total

cost for two of each? ($2.20)

MM 7-55

1. 

550 ÷ 5 = (110).

2. 

A $40 pair of pants is reduced by 20%.

What is the new price? ($32)

3. 

Write this number. Two hundred two andtwo-hundred two thousandths. (202.202)

4. 

34 = (81).

5. 

What is the cost of 15 packs of gum thatsell for 20 cents each? ($3)

MM 7-56

1. 

What is 1/8 of 64? (8)

2. 

82 = (64).

3. 

What is the change from a $5 bill if your

purchase was $3.30? ($1.70)

4. 

What is the area of a square with a sideof 12 yards? (144 sq. yards)

5. 

120 x 30 = (3,600).

Page 15: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 15/21

MM 7-57

1. 

6 hundredths plus 6 thousandths = (.066).

2. 

848 + 6 = (854).

3. 

An increase from 20 to 50 is what %

increase? (150%)

4. 

Write the expression for 4 more than 4times a number. (4 x n + 4)

5. 

A triangle has a 50 degree angle and a 45degree angle. What is the measurementof the third angle? (85 degrees)

Mm 7-58

1. 

Write an expression for 3 times a numberplus 5. (3 x n + 5)

2. 

Write a fraction for 90% in lowest terms.(9/10)

3. 

A triangle has a 55 degree angle and a 25degree angle. What is the measurementof the third angle? (100 degrees)

4. 

770 ÷ 70 = (11).

5.  Write this number. Nine and thirty ninethousandths. (9.039)

MM 7-59

1. 

280 – 71 = (209).

2. 

A $36 blouse is reduced by 25%. What isthe new price? ($27)

3. 

An increase from 40 t0 60 is whatpercent increase? (50%)

4. 

What is the change from $35 if yourpurchase is $13.50? ($21.50)

5. 

60 x 20 = (1,200).

MM 7-60

1. 

What is the area of a rectangle that has alength of 8 inches and a width of 4inches? (32 sq. inches)

2. 

Write a fraction for 70% in lowest terms(7/10)

3. 

What number is halfway between 70 and90? (80)

4. 

An increase from 10 to 40 is whatpercent increase? (300%)

5. 

645 + 15 = (660).

Page 16: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 16/21

MM 7-61

1. 

Write 4/5 as a decimal. (.8)

2. 

90 x 80 = (7,200).

3. 

Find the area of a square with a 7 ft. side.

(49 sq. ft.)

4.  640 ÷ 4 = (160).

5. 

8 tenths plus 85 hundredths = (1.65).

MM 7-62

1.  What is 20% of 100? (20)

2. 

What is 5 _ - 2 _? (3 _)

3. 

What is the supplement of a 60 degreeangle? (120)

4. 

+4 + -10 = (-6).

5. 

Estimate 82 x 41. (3,200)

MM 7-63

1. 

What is _ of 80? (60)

2. 

At 50 cents a lb., how much would 5 lbs.of pears cost? ($2.50)

3. 

What is the interest for one year at 10%on $1,500? ($150)

4. 

How many meters in 580 cm? (5.8)

5. 

+8 - -4? (12)

MM 7-64

1. 

What is 60% of 80? (48)

2. 

Noell needed a string 20 ft. long. Shefound one 6 ft. long. How much more didshe need? (14 ft.)

3. 

What is 122? (144)

4. 

What is the perimeter of a square 15 ft.long? (60 ft.)

5. 

What is the square root of 144? (12)

Page 17: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 17/21

MM 7-65

1. 

What is half of 16 and 6 hundredths?(8.03)

2.  What is 480 ÷ 8? (60)

3. 

If 8 oz. of soap costs 80 cents, how muchwould 1 lb. cost? ($1.60)

4. 

What is 1% of 60? (.6)

5. 

Karleen had 6 quarters, 6 dimes and 6nickels. She spent 40 cents. How muchdoes she have left? ($2.00)

MM 7-66

1. 

What is 20% of 50? (10)

2. 

What is 6 2/3 – 2 1/6? (4 3/6 or 4 _)

3. 

What is the supplement of an 85 degreeangle? (95 degrees)

4. 

+3 + -3 = (0).

5. 

Estimate 61 x 42. (2,400)

MM 7-67

1. 

What is _ of 120? (30)

2. 

At 21 cents a lb., how much would 4 lbs.of candy cost? (84 cents)

3. 

What is the interest for one year at 10%on $2,200? ($220)

4. 

How many meters in 440 cm? (4.4)

5. 

+3 - -5 = (8).

MM 7-68

1. 

What is 50% of 90? (45)

2. 

24 = (16).

3. 

What is the perimeter of a square which

is 6 _ ft. on one side? (26 ft.)

4. 

What is _ of twelve and four hundredths?(3.01)

5. 

What is 150% of 60? (90)

Page 18: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 18/21

MM 7-69

1. 

What is 5% of 680? (34)

2. 

+6 - -2 = (8).

3. 

How many meters is 680 cm? (6.8)

4. 

Estimate 89 x 48. (4,500)

5. 

What is 20% of 600? (120)

MM 7-70

1. 

Frank had 4 quarters, 4 dimes and 4nickels. He spent 50 cents. How muchdoes he have left? ($1.10)

2. 

What is the supplement of a 50 degreeangle? (130 degrees)

3. 

What is 6 2/3 – 2 1/3? (4 1/3)

4. 

At 56 cents a lb., how much would 5 lbs.of potatoes cost? ($2.80)

5. 

Estimate 21 x 30. (600)

MM 7-71

1. 

What is 30% of 200? (60)

2. 

What is 25? (32)

3. 

What is 96 ÷ 3? (32)

4. 

If 4 oz. of nuts cost 60 cents, how muchwould one pound cost? ($2.40)

5. 

+8 - -4 = (4).

MM 7-72

1.  What is 3/5 of 25? (15)

2. 

Estimate 89 x 71. (6,300)

3. 

What is 60% of 600? (360)

4. 

What is the interest for one year at 5% on

$2,000? ($100)

5. 

What is 2 _ times 8? (20)

Page 19: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 19/21

MM 7-73

1. 

Jill cut a piece of material that was 6 ft. 4in. long into two pieces. One was 4 ft. 2in. long. How long was the other piece?(2 ft. 2 in.)

2. 

What is the square root of 121? (11)

3. 

What is 3 1/3 times 9? (30)

4. 

What is 120 ÷ 6? (20)

5.  What is 2,400 – 1,500? (900)

MM 7-74

1. 

What is the interest for one year at 9% on$3,000? (270)

2. 

What is 60% of 4,000? (2,400)

3. 

What is 6 x 8 – 4 + 6? (50)

4. 

What is 3 – 2/3? (2 1/3)

5. 

How many meters in 380 cm? (3.8)

MM 7-75

1. 

Estimate 22 x 31. (600)

2. 

+6 + -2 = (4).

3. 

At 42 cents a lb. how much would 6 lbs.

of grapes cost? ($2.52)

4. 

What is 50% of 400? (200)

5. 

What is 140 ÷ 5? (28)

MM 7-76

1. 

What is _ of 200? (150)

2. 

What is 90% of 400? (360)

3. 

What is 6 7/8 – 4 1/8? (2 6/8 or 2 _)

4.  What is 126 ÷ 6? (21)

5. 

+5 - -2 = (7).

Page 20: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 20/21

MM 7-77

1. 

What is the interest for 1 year at 8% on$5,000? ($400)

2. 

What is 35% of 300? (105)

3. 

What is 84 ÷ 4? (21)

4. 

-6 + +2 = (-4).

5. 

What is 230 – 170? (60)

MM 7-78

1.  What is 50% of 460? (230)

2. 

What is 4 – 1 1/3? (2 2/3)

3. 

What is the supplement of a 35 degreeangle? (145 degrees)

4. 

+8 + -12 = (-4).

5. 

Estimate 37 x 54. (2,000)

MM 7-79

1. 

What is 150% of 50? (75)

2. 

What is 16 – 3 _? (12 _)

3. 

What is the complement of a 30 degree

angle? (60 degrees)

4. 

-8 + -15 = (-23).

5. 

Estimate 23 x 72. (1,400)

MM 7-80

1. 

What is 75% of 400? (300)

2. 

What is 3 _ - 2 _? (1 _)

3. 

What is the supplement of a 40 degreeangle? (140 degrees)

4. 

+16 - +7 = (9)

5.  Estimate 147  5. (30)

Page 21: 7th Grade Mental Math

8/16/2019 7th Grade Mental Math

http://slidepdf.com/reader/full/7th-grade-mental-math 21/21

MM 7-81

1. 

What is 25% of 16? (4)

2. 

What is 4 _ - 1 _? (3)

3. 

What is the complement of a 25 degree

angle? (65 degrees)

4. 

-6 - -3 = (-3).

5. 

Estimate 17 x 62. (1,200)

MM 7-82

1. 

What is 1% of 500? (5)

2. 

What is 4 1/3 + 6 2/3? (11)

3. 

What is the supplement of a 90 degreeangle? (90 degrees)

4. 

-16 - -7 = (-9).

5. 

Estimate 63 x 28. (1,800)

MM 7-83

1. 

What is 150% of 80? (120)

2. 

What is 70 x 60? (4,200)

3. 

What is 2 _ times 16? (36)

4.  Estimate 799  20. (40)

5. 

2.5 + 1.5 = (4).

MM 7-84

1.  What is 360 + 480? (840)

2. 

What is the area of a rectangle 14 m longand 6 m wide? (64 sq m)

3. 

What is 2% of 140? (2.8)

4. 

Estimate 83.5 x 16. (1,600)

5. 

Write the number that is 4 tenths morethan 15 and 7 tenths. (16.1)