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Abacus Juniors Experts

Abacus Juniors Experts Lesson 7

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

1 / 50

880

-770

2 / 50

699

-179

3 / 50

880

-700

4 / 50

473

-223

5 / 50

966

-255

6 / 50

121

662

7 / 50

233

665

8 / 50

984

-261

9 / 50

644

-522

10 / 50

909

-608

11 / 50

391

-280

12 / 50

808

-201

13 / 50

977

-267

14 / 50

375

-360

15 / 50

776

-661

16 / 50

277

-166

17 / 50

211

678

18 / 50

486

-225

19 / 50

999

-852

20 / 50

721

266

21 / 50

704

-600

22 / 50

286

-165

23 / 50

633

-521

24 / 50

777

-166

25 / 50

329

-118

26 / 50

804

-600

27 / 50

470

522

28 / 50

663

-552

29 / 50

888

-267

30 / 50

788

-122

31 / 50

886

-771

32 / 50

599

-88

33 / 50

267

-152

34 / 50

299

-185

35 / 50

732

117

36 / 50

999

-141

37 / 50

723

-513

38 / 50

244

-133

39 / 50

855

-700

40 / 50

404

525

41 / 50

826

-116

42 / 50

909

-701

43 / 50

266

-255

44 / 50

321

668

45 / 50

422

566

46 / 50

229

-108

47 / 50

733

-622

48 / 50

574

115

49 / 50

466

-315

50 / 50

229

-118

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