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3 cijfers X 3 cijfers met hulp [1]

3 cijfers X 3 cijfers met hulp [1]

 
3 6 4
1 9 4 ×
4 × 4 = 1 6
4 × 60 = 2 4 0
4 × 300 = 1 2 0 0
90 × 4 = 3 6 0
90 × 60 = 5 4 0 0
90 × 300 = 2 7 0 0 0
100 × 4 =
400
100 × 60 =
6000
100 × 300 =
+ 30000
70616