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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
1 5 0
1 4 ×
4 × 0 =
0
4 × 50 =
200
4 × 100 =
400
10 × 0 =
0
10 × 50 =
500
10 × 100 =
+ 1000
2100