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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
4 3 3
2 4 ×
4 × 3 =
12
4 × 30 =
120
4 × 400 =
1600
20 × 3 =
60
20 × 30 =
600
20 × 400 =
+ 8000
10392