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Base Ten Name
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100

3+5=2+?

3+5=2+6

100

8+5=

13

100

14 tens

140

100

45+__= 53

change

100

10 + 20=

30

200

10+9=9+?

10+9=9+10

200

80+40=

120

200

36 tens + 3 ones

363

200

__- 32=15

Start

200

35+50=

85

300

20+?=60+10

20+50=60+10

300

39+5=

44

300

50 tens

500

300

38+ 50=__

Result

300

80+90=

170

400

100-30=90-?

100-30=90-20

400

58+12=

70

400

1 hundred+ 40 tens + 7 ones

147

400

43- __=12

Change

400

450+50=

500

500

56-6=25+?

56-6=25+25

500

258+9=

267

500

45 tens + 23 ones

473

500

__+ 80= 100

Start

500

200+640=

840