Rounding
Round 752 to the nearest hundred
800
What property is shown below?
9 + 0 = 9
Identity property
Find the difference of 438 - 238
200
Find the sum of 109 and 168.
277
What addition equation can be used to check the answer for 668 - 432 = 236?
432 + 236 = 668
Find the sum of 109 and 168. Round to the nearest 100.
277 = 300
Identify the property
16 + 10 = 10 + 16
Commutative property
Find the difference of 825 and 213
612
What is the sum of 123 + 247 + 108?
478
Which strategy shows a way to check the 180 + 45 = 228 using inverse operations?
228 - 45 = 180
Find the difference of 436 - 238. Round to the nearest 10
198 = 200
What property is this?
(100 + 10) + 170 = 100 + (10 + 170)
Associative property
Subtract 387 - 103
284
Find the sum of 526 + 213. Break apart the sum into hundreds, tens and ones.
739
700 + 30 + 9
How can you check the answer for 765 - 321 = 444?
Add 321 + 444 = 765
Add 473 + 102. Round to the nearest 100.
575 = 600
Is this the identity property?
75 + 65 = 65 + 75
No
Find the difference of 529 and 130
399
Find the sum of 165 + 99 + 47
311
Round 345 to the nearest ten and hundred.
345 = 350
345 = 300
Find the sum of 109 and 168. Round to the nearest 10
109 + 168 = 277
277 = 280
What property is this?
(56 + 15) + 5 = (5 + 56) + 15
Commutative and Associative
Find the missing addend by using the inverse operation.
372 = ______ + 48
324
Find the sum of 224, 187, and 352.
763
What is the commutative property of addition?
Does not matter what order