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3 cijfers X 2 cijfers met hulp [1]

3 cijfers X 2 cijfers met hulp [1]

 
5 7 6
2 2 ×
2 × 6 = 1 2
2 × 70 = 1 4 0
2 × 500 = 1 0 0 0
20 × 6 =
120
20 × 70 =
1400
20 × 500 =
10000
12672