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Addition sum
Reverse sum
Missing number
Recreate sum
100

12+12

24

100

43+21+13=

21+13+43

or

13+43+21

100

12+__=20

8

100

5+5=10

2+8

1+9

10+0

3+7

6+4

200

Partition this these numbers into tens and ones to solve the question:

24+32

20 + 30 =50

4 + 2 =6

200

124+45+100=

100+45+124

or

45+124+100

200

45+__=80

35

200

13+7=20

10+10

12+8

19+1

answers vary

300

45+26=

70

300

20+13+5=

5+20+13

or

13+20+5

300

124+__=150

26

300

25+25=50

30+20

40+10

answers will vary

400

104+60=

164

400

45+21+6

6+21+45

or

21+6+45

400

210+__=250

40

400

50+50=100


90+10

80+20

70+30

answers will vary

500

Partition these numbers into tens and ones to solve the question:

74+21

70 + 20 = 90

4 + 1= 5

500

60+20+10=

10+60+20

or

20+10+60

500

360+__=400

40

500

150+20=170

130+40

60+110

30+140

answers will vary