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3 cijfers X 2 cijfers met hulp [1]

3 cijfers X 2 cijfers met hulp [1]

 
1 2 9
1 7 ×
7 × 9 = 6 3
7 × 20 = 1 4 0
7 × 100 = 7 0 0
10 × 9 =
90
10 × 20 =
200
10 × 100 =
1000
2193