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3 cijfers X 3 cijfers met hulp [2]

3 cijfers X 3 cijfers met hulp [2]

 
7 4 9
9 7 6 ×
6 × 9 = 5 4
6 × 40 = 2 4 0
6 × 700 = 4 2 0 0
70 × 9 =
630
70 × 40 =
2800
70 × 700 =
49000
900 × 9 =
8100
900 × 40 =
36000
900 × 700 =
+ 630000
731024