Unit 1 Review Flashcards
ALA: Pre-AlgebraUnit 1 Whole Numbers
PUTTING IT ALL TOGETHER
PRACTICING FOR THE ALA Unit 1 Exam
Universal Truths
8 ÷ 81
100 ÷ 1001
257 ÷ 257
1
Any number divided by itself = 1.
8 + 0
8
100 + 0100
Adding zero to any number gives you the same number.
8 - 80
547 - 5470
Any number minus itself always gives
you zero.
8 18
933 1933
Multiplying any number by 1 gives
you the same number.
8 00
632 00
Multiplying any number by 0 gives
you 0.
DON’T YOU DARE!
8 ÷ 0undefined
You can’t divide by 0. N ÷ 0
5 x 48 × 2
480
97 + 496 + 3
596
COMMUTATIVE PROPERTY
OF ADDITION AND MULTIPLICATION
You can add in any order without changing the sum.You can multiply in any order without changing the
product.
ORDER OF OPERATIONS
PLEASEEXCUSE MY DEARAUNT SALLY
4 + 5 × 3
19
20 ÷ 5 × 4
16
(6 + 3)2
81
1 + 5(6 – 3)2
46
Interview with a Number
100Even or odd?
Perfect Square?
Divisible by 3?
Divisible by 5?
Divisible by 4?
Divisible by 10?
even
yes
no
yes
yes
yes
Prime or composite? composite
Interview with a Number
85Even or odd?
Perfect Square?
Divisible by 3?
Divisible by 5?
Divisible by 4?
Divisible by 10?
odd
no
no
yes
no
no
Prime or composite? composite
Make a Factor Tree!
198
2 x 3 x 3 x 11
ROUND 694.827To the nearest ten:
To the nearest unit:
To the nearest hundred:
690
695
700
WRITE THESE NUMBERS:
One million
Three hundred thousand
One billion
One bazillion
One googol
1,000,000 = 106
300,000
1,000,000,000= 109
Not a number!
10100
ADD, SUBTRACT, MULTIPLY, AND DIVIDE:
29595
SUM
PRODUCT
DIFFERENCE
QUOTIENT
624 566
17255 20 r 15
Start with 10
DOUBLE IT:
HALVE IT:
SQUARE IT:
20
5
100
4:23 pmWhat time is it in military time?
1623
0927What time is it in normal time?
9:27 am
90, 80, 90, 70, 20 Mean: 70 Median: 80Mode: 90
Calculate the Mean, Median, and Mode of these test scores:
Resources:
Picture on slide 2Working Together Teamwork Puzzle Concept by lumaxart is licensed under CC BY-SA 2.0
Picture on slide 3Truth or Consequences by einelem is licensed under CC BY-SA 2.0
Clip Art on slide 20Hangover by Martin Fuhrmann is available in the public domain under CC0 Public Domain
Picture on slide 26Smiling Grandma Fab Sunglasses White Hair by Stephen Depolo is licensed under CC BY 2.0
Clip Art on slide 31 and 32Microphone is available in the public domain under CC0 Public Domain
Clip Art on slide 33 Christree by Christreat is licensed under CC BY-SA 4.0
Clip Art on slide 34Abstract Psychedelic Swirl is available in the public domain under CC0 Public Domain
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