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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
1 3 4
1 2 ×
2 × 4 =
8
2 × 30 =
60
2 × 100 =
200
10 × 4 =
40
10 × 30 =
300
10 × 100 =
+ 1000
1608