Computation
Find the sum. Complete the inverse operation.
560 + 281 =
560 + 281 = 841
841 - 281 = 560
A USB drive holds 1000 songs. You have 468 songs on a cell phone and 412 songs on an iPad. Can the USB drive hold all of your songs?
Yes, it can hold all of the songs.
468 + 412 = 880
1000 - 800 = 120
Write the equation shown by the number line.
See work shown.
Find the sum. Complete using the inverse operation.
178 + 37 + 84 =
178 + 37 + 84 = 299
299 - 178 = 121
121 - 37 = 84
A baker makes 520 cupcakes. She sells 318 of them. Then she makes 291 more. How many muffins does he baker have now?
520 - 318 = 202
202 + 291 = 493 cupcakes
Find the missing digits.
See work shown.
Find the difference. Check using inverse operation.
479 - 361 =
479 - 361 = 118
118 + 361 = 479
There are three candidates in an election. Candidate B receives 119 fewer votes than Candidate A. Candidate C receives 148 more votes than Candidate B. Which candidate wins the election?
Candidate B: 875 votes
875 + 119 = 994 votes
875 + 148 = 1023 votes
Candidate C wins.
Find the difference. Check using inverse operation.
684 - 427 =
684 - 427 = 257
257 + 427 = 684
A principal buys juice boxes for each of the first grade, second grade, and third grade students. Juice boxes come in packages of 10. How many packages does the principal buy?
1st: 91
2nd: 89
3rd: 70
91 + 89 + 70 = 250
25 packages
Which equation does not belong with the other three?
432 + 158 = 590
590 + 158 = 748
590 - 432 = 158
158 + 432 = 590
590 + 158 = 748
Which property is shown?
21 + (16 + 13) = (21 + 16) + 13
Communative Property of Addition
Associative Property of Addition