Page 1
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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)