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１ねんせいの計算
なん十 の けいさん
- 20 + 10 = 30
- 20 + 60 = 80
- 20 + 50 = 70
- 40 + 10 = 50
- 20 + 40 = 60
- 20 + 20 = 40
- 10 + 40 = 50
- 40 + 50 = 90
- 40 + 50 = 90
- 30 + 30 = 60
- 80 - 40 = 40
- 60 - 30 = 30
- 80 - 40 = 40
- 90 - 10 = 80
- 70 - 40 = 30
- 60 - 60 = 0
- 80 - 20 = 60
- 70 - 50 = 20
- 90 - 60 = 30
- 100 - 20 = 80
１ねんせいの計算
なん十 の けいさん
- 20 + 40 = 60
- 20 + 30 = 50
- 20 + 30 = 50
- 40 + 20 = 60
- 20 + 10 = 30
- 10 + 40 = 50
- 30 + 60 = 90
- 40 + 60 = 100
- 30 + 10 = 40
- 30 + 30 = 60
- 70 - 30 = 40
- 80 - 60 = 20
- 70 - 30 = 40
- 60 - 60 = 0
- 100 - 10 = 90
- 70 - 60 = 10
- 70 - 60 = 10
- 80 - 40 = 40
- 60 - 20 = 40
- 80 - 40 = 40