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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
3 4 7
7 4 ×
4 × 7 =
28
4 × 40 =
160
4 × 300 =
1200
70 × 7 =
490
70 × 40 =
2800
70 × 300 =
+ 21000
25678