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Basic facts
2 digit by 2 digit
3 digit by 2 digit
Multi-digit surprise
Surprise
100

7+7

14

100

23+17

40

100

372 + 26

398

100

209+174

383

100

214+30+122

366

200

9+9

18

200

33+18

51

200

226+43

269

200

513+759

1,272

200

927+654

1,581

300

8+4

12

300

45+19

64

300

325+52

377

300

629+237

866

300

209+174 what digit is in the tens place

383, the 8 is in the tens digit

400

7+6

13

400

67+18

85

400

284+15

299

400

371+253

624

400

513+142 rounded to the nearest 100

655 rounded to the nearest 100 is 700

500

8+9

17

500

98+38

136

500

812+65

877

500

846+302

1,148

500

206+347+712

1,265