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3 cijfers X 3 cijfers met hulp [2]

3 cijfers X 3 cijfers met hulp [2]

 
2 4 3
3 1 7 ×
7 × 3 = 2 1
7 × 40 = 2 8 0
7 × 200 = 1 4 0 0
10 × 3 =
30
10 × 40 =
400
10 × 200 =
2000
300 × 3 =
900
300 × 40 =
12000
300 × 200 =
+ 60000
77031