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Properties of Addition
Break Apart
Equations
Rounding
Estimating
100
Name the addition property that goes with this equation 8 + 6 = 6 + 8
Commutative
100
Use break apart to add 15 + 23
10 + 5 20 + 3 10 + 20 = 30 5 + 3 = 8 30 + 8 = 38
100
Find the value of n 6 + n = 11
5
100
Round 266 to the nearest hundred
300
100
Round each number to the nearest 10 and estimate the sum. 23 + 52 =
20 + 50 = 70
200
Name the addition property that goes with this equation: 8 + 0 = 8
Identity Property
200
Use break apart to find the sum of 43 and 54
40 + 3 50 + 4 40 + 50 = 90 3 + 4 = 7 90 + 7 = 97
200
Find the value of n 12 - 10 = n
2
200
Round 145 to the nearest ten
150
200
Round each number to the nearest 10 and estimate the difference. 45 - 39 =
50 - 40 = 10
300
Name that property that goes with this equation: (6+2) + 3 = 6 + (2+3)
Associative
300
Use mental math to break apart the addends. What is the missing number in this equation? 17 + 29 = (10+7) + (20+___) = 46
9
300
Find the value of n 40 = 35 + n
5
300
Which number rounds to 200? 145 210 255
210
300
Round to the nearest 100 and estimate the sum. 123 + 678 =
100 + 700 = 800
400
Give an example of the Commutative Property of addition. Use the numbers 2 and 4
2 + 6 = 6 + 2
400
Use the break apart method to add 28 + 44. What is the missing number in the equation? 28 + 44 = (20+8) + (____+4) = 72
40
400
Find the value of n 62 = n + 42
20
400
Which number rounds to 280? 245 289 275
275
400
Round to the nearest 100 and estimate the difference. 697 - 444 =
700 - 400 = 300
500
Give an example of the Identity Property of addition. Use the number 4.
4 + 0 = 4 or 0 + 4 + 4
500
Use the break apart method to find the missing numbers in this equation. (___+7) + (30+___) = 27 + 36 = 63
20 and 6
500
Find the value of n 20 = n - 5
25
500
Which number rounds to 640? 666 623 636
636
500
Round to the nearest 10 and estimate the difference. 555 - 154 =
560 - 150 = 410