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3 cijfers X 3 cijfers met hulp [1]

3 cijfers X 3 cijfers met hulp [1]

 
9 3 4
3 2 0 ×
0 × 4 = 0
0 × 30 = 0
0 × 900 = 0
20 × 4 = 8 0
20 × 30 = 6 0 0
20 × 900 = 1 8 0 0 0
300 × 4 =
1200
300 × 30 =
9000
300 × 900 =
+ 270000
298880