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3 cijfers X 3 cijfers met hulp [2]

3 cijfers X 3 cijfers met hulp [2]

 
2 6 4
1 1 1 ×
1 × 4 = 4
1 × 60 = 6 0
1 × 200 = 2 0 0
10 × 4 =
40
10 × 60 =
600
10 × 200 =
2000
100 × 4 =
400
100 × 60 =
6000
100 × 200 =
+ 20000
29304