Base 10 Blocks
Open Number Line
Partial Sum
Stack & Solve
Free Solve
100

372-110=

262

100
330-116=
214
100
291-162=
129
100
300-107=
193
100
Ethan had 352 Pokemon cards. He gave 118 Pokemon cards to Wyatt. How many cards does Ethan have left?
352-118=234
200

278-218

360

200
582-226=
356
200
528-256=
272
200
500-328
172
200
Henry's book is 634 pages. He has read 562 pages so far. How many pages does he have left?
634-562=72
300

349-224=

124

300
829-654=
175
300
656-383=
273
300
403-255=
148
300
There are 636 blue and red balls in the school. 259 are blue. How many are red?
636-259=377
400

973-597=

376

400
321-123=
198
400
421-184=
237
400
708-249=
459
400
Mrs. McCulloch has 500 pencils. The class uses 428. How many pencils does Mrs. McCulloch have left?
500-428=72
500

786-624=

162

500
723-485=
238
500
768-579=
189
500
903-526=
377
500
Junior planted 603 seeds in the ground. 408 of the seeds grew into flowers. How many seeds did not grow into flowers?
603-408=195
M
e
n
u