Show:
Subtraction Problems
Addition Problems
Subtraction and Addition
100

620 - 10 is what?

630

100

100 + 10 is what?

110

100

549 - 100 is what?

449

200

540 - 100 is what?

530

200

240 + 100 is what?

340

200

755 + 100 is what?

855

300

40 - 10 is what

30

300

222 + 100 is what?

232

300

867 - 10 is what?

857

400

921 - 100 is what

821

400

452 + 10 is what? 

462

400

428 + 10 is what? 

438

500

832- 100 is what?

732

500

888 + 100 is what? 

988

500

954 - 100 is what?

854