345+645
990
981-620
361
Mark had 673 Lego pieces, he used 468 to build a rocket. How many Lego pieces does he have left?
Addition or Subtraction?
205 Lego pieces
384-293
91
3x2
6
654+798
1452
645-321
324
Brennan ate 20 donuts yesterday and 38 more today. How many donuts has Brennan eaten?
Addition or Subtraction?
58 donuts
834-646
188
5x10
50
456+879
1335
142
Addition or Subtraction?
168 books
753-298
455
11x7
77
453+358
811
784-564
184
Sidney bought 391 stickers one day and 456 stickers the next. How many stickers did Sidney buy in all?
Addition or Subtraction?
847 Stickers
924-763
161
6x8
48
543+213
756
849-528
321
Sidney has 847 stickers. She brought 304 of them to work. How many stickers does she have left?
Addition or Subtraction?
543 stickers
1032-643
389
9x9
81