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3 cijfers X 3 cijfers met hulp [2]

3 cijfers X 3 cijfers met hulp [2]

 
9 3 0
9 5 2 ×
2 × 0 = 0
2 × 30 = 6 0
2 × 900 = 1 8 0 0
50 × 0 =
0
50 × 30 =
1500
50 × 900 =
45000
900 × 0 =
0
900 × 30 =
27000
900 × 900 =
+ 810000
885360