Properties of Addition
Is this statement true or false?
34 + 0 = 34
True
123 + 54 =
177
888 - 333 =
555
Round 299 to the nearest hundred.
Estimate 266 + 178 to the nearest hundred.
300 + 200 = 500
Is this statement true or false?
73 + 2 = 72 + 12
False
Break apart 456 into hundreds, tens, and ones.
400 + 50 + 6
672 - 434 =
238
Round 342 to the nearest hundred
300
Estimate 821 + 412 to the nearest hundred
800 + 400 = 1,200
Fill in the blank:
15 + 8 = ____ + 15
8
678 + 323 =
1,001
Jenny has $456. She spent $232 to buy groceries for her family. How much money does she have left?
$224
Round 412 to the nearest ten
410
Estimate 628 + 239 to the nearest ten
630 + 240 = 870
Fill in the blank:
(19 + 2) + 13 = (19 + 13) + _____
2
123 + 456 + 321 =
900
Mark was selling cookies at the bake sale. He started with 488 total. In the first hour he sold 211 cookies. In the second hour he sold 187 cookies. How many cookies did he have left at the end?
90 cookies
Round 85 to the nearest ten.
90
Estimate 444 + 321 to the nearest ten
440 + 320 = 760
True or False:
If I had the same numbers in a different order, my answer will be different
False
Show how to add 444 + 335 by breaking apart the second number and adding on
335 = 300 + 30 + 5
444 + 300 = 744
744 + 30 = 774
774 + 5 = 779
Solve 546 - 298 by starting at 298 and counting up to 546.
298 + 2 = 300
300 + 200 = 500
500 + 46 = 546
200 + 46 + 2 = 248
Round 989 to the nearest hundred.
1,000
Estimate 321 + 456 + 612 to the nearest hundred
300 + 500 + 600 = 1,400