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Topic 8 Review Flashcards | StudBud
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Topic 8 Review
You do not need pencil and paper when using __________.
93 + 0 = 93
Topic 8 Review
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Answers
1
93 + 0 = 93
Identity Property
Associative Property
3rd Grade Property
Commutative Property
2
You do not need pencil and paper when using __________.
rounding
mental math
compatible numbers
word problems
3
8 + (5 + 9) = (8 + 5) + 9
3rd Grade Property
Identity Property
Commutative Property
Associative Property
4
30 + ___ = 30
30
100
0
15
5
3 + (7 + 8) = (3 + __) + 8
15
7
3
8
6
Round to the nearest 100 to find the estimate of 457 + 231.
400 + 200 = 600
500 + 200 = 700
400 + 100 = 500
500 + 300 = 800
7
Round 356 to the nearest 10.
360
350
370
380
8
12 + ___ = 15 + 12
12
27
15
3
9
Round to the nearest 100 to find the estimate for 785 - 476.
800 - 400 = 400
700 - 500 = 200
800 - 300 = 500
800 - 500 = 300
10
17 + 14 = 14 + 17
Commutative Property
Identity Property
3rd Grade Property
Associative Property
11
Round to the nearest 10 to find the estimate of 25 + 53.
30 + 40 = 70
20 + 50 = 70
30 + 50 = 80
20 + 40 = 60
12
Round 145 to the nearest 100.
100
300
200
400
13
Round 67 to the nearest 10.
80
70
60
50
14
Numbers that are easy to compute mentally are _____________.
odd numbers
compatible numbers
even numbers
rounding numbers
15
You ________ when you use the nearest multiple of ten or hundred.
round
carry
re-group
blend
16
__________ is the value given to the place a digit has in a number.
Round
Place Value
Blend
Carry
17
Round 5,280 to the nearest 100.
5,300
5,400
5,100
5,200
18
Addition and Subtraction are _______ ________.
compatible numbers
inverse operations
mental math
place value
