Check your Answer
Correct or Not?!
203+173= 476
WRONG!
203+173= 376
Did you have to ungroup to get ten ones?
427-159=
YES
100+400
500
100-10
90
Pearl buys 84 flowers. She gives 36 to her grandmother. How many flowers does she have left?
48 flowers
Correct or Not Correct?
845+238= 1083
RIGHT!
845+238= 1083
Did you make a new ten?
437+324
YES
123+20
143
280-30=
250
Grace has 537 paper clips. 365 of the paper clips are silver in color. How many paper clips are not silver in color?
172 paperclips
Correct or Not?
576-298= 278
RIGHT!!
576-298=278
Did you have to ungroup to get 10 tens?
762-395
YES
367
289+390=
679
532-181=
351
Alex’s mom is knitting a blanket that is 673 rows long. So far she has knitted 385 rows. How many rows does she have left to knit?
288 rows
Correct or Not?
976-148= 832
WRONG!!
976-148= 828
Did you make a new ten?
390+610
YES
1,000
571+287
858
903-267
636
A squirrel collects 283 acorns. Then the squirrel collects 156 more. How many acorns does the squirrel collect?
439 acorns
Correct or Not?
1000-542=468
WRONG!
1000-542=458
Did you have to ungroup to get 10 ones?
537-168
YES
369
942+298
1240
1000-205=
795
Corey has been collecting coins for two years. The first year he collects 659 coins. The second year he collects 328 more coins. How many coins does he have after two years of collecting?
987 coins