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Abacus Juniors Experts

Abacus Juniors Experts Lesson 7

Addition and subtraction in the 100s, practice without regrouping.

1 / 50

404

525

2 / 50

776

-661

3 / 50

804

-600

4 / 50

699

-179

5 / 50

574

115

6 / 50

277

-166

7 / 50

470

522

8 / 50

599

-88

9 / 50

422

566

10 / 50

266

-255

11 / 50

211

678

12 / 50

855

-700

13 / 50

826

-116

14 / 50

329

-118

15 / 50

229

-118

16 / 50

299

-185

17 / 50

121

662

18 / 50

244

-133

19 / 50

788

-122

20 / 50

375

-360

21 / 50

721

266

22 / 50

999

-141

23 / 50

644

-522

24 / 50

466

-315

25 / 50

473

-223

26 / 50

663

-552

27 / 50

880

-700

28 / 50

977

-267

29 / 50

486

-225

30 / 50

909

-701

31 / 50

732

117

32 / 50

391

-280

33 / 50

909

-608

34 / 50

886

-771

35 / 50

984

-261

36 / 50

723

-513

37 / 50

808

-201

38 / 50

966

-255

39 / 50

286

-165

40 / 50

229

-108

41 / 50

633

-521

42 / 50

777

-166

43 / 50

733

-622

44 / 50

880

-770

45 / 50

888

-267

46 / 50

704

-600

47 / 50

321

668

48 / 50

267

-152

49 / 50

233

665

50 / 50

999

-852

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