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16

Abacus Juniors Experts

Abacus Juniors Experts Lesson 7

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

1 / 50

723

-513

2 / 50

229

-118

3 / 50

486

-225

4 / 50

808

-201

5 / 50

233

665

6 / 50

732

117

7 / 50

880

-770

8 / 50

391

-280

9 / 50

266

-255

10 / 50

473

-223

11 / 50

299

-185

12 / 50

599

-88

13 / 50

804

-600

14 / 50

909

-608

15 / 50

704

-600

16 / 50

966

-255

17 / 50

788

-122

18 / 50

321

668

19 / 50

733

-622

20 / 50

663

-552

21 / 50

574

115

22 / 50

633

-521

23 / 50

977

-267

24 / 50

826

-116

25 / 50

470

522

26 / 50

721

266

27 / 50

375

-360

28 / 50

644

-522

29 / 50

267

-152

30 / 50

422

566

31 / 50

888

-267

32 / 50

999

-852

33 / 50

121

662

34 / 50

329

-118

35 / 50

909

-701

36 / 50

880

-700

37 / 50

777

-166

38 / 50

211

678

39 / 50

999

-141

40 / 50

229

-108

41 / 50

776

-661

42 / 50

855

-700

43 / 50

277

-166

44 / 50

984

-261

45 / 50

699

-179

46 / 50

404

525

47 / 50

466

-315

48 / 50

886

-771

49 / 50

244

-133

50 / 50

286

-165

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