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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
2 5 7
4 3 ×
3 × 7 =
21
3 × 50 =
150
3 × 200 =
600
40 × 7 =
280
40 × 50 =
2000
40 × 200 =
+ 8000
11051