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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
4 7 3
5 1 ×
1 × 3 =
3
1 × 70 =
70
1 × 400 =
400
50 × 3 =
150
50 × 70 =
3500
50 × 400 =
+ 20000
24123