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Tuesday, 5 May 2015

Ones and Tens


Question
Tens
Ones
Answer
E.g. 21 + 32 =
20 + 30 = 50
1 + 2 = 3
50 + 3 = 53
22 + 31
20+30=50
2+1=3
30
34 + 51
30+50=80
4+1=5
85
23 + 45
20+40=60
3+5=8
68
33 + 21
30+20=50
2+1=3
53
44 + 21
40+20=60
4+1=5
65
54 + 22
50+20=70
4+2=6
76

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