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Math Facts
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Regrouping
Mystery Number
100

13-5

8

100

46-22

22

100

52-28

24

100

A number with 

3 ones

5 tens

7 hundreds

753

200

26-10

16

200

146-35

111

200

33-15

18

200

100 less than 264

164

300

10-6

4

300

575-341

234

300

368-76

292

300

10 less than 534

524

400

16-8

8

400

569-432

137

400

526-219

307

400

A number with 

9 ones

7 tens

2 hundreds

279

500

135-10

125

500

783-371

412

500

523-275

248

500

a number with 7 tens plus 2 tens

90