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3 cijfers X 3 cijfers met hulp [2]

3 cijfers X 3 cijfers met hulp [2]

 
1 9 3
2 4 3 ×
3 × 3 = 9
3 × 90 = 2 7 0
3 × 100 = 3 0 0
40 × 3 =
120
40 × 90 =
3600
40 × 100 =
4000
200 × 3 =
600
200 × 90 =
18000
200 × 100 =
+ 20000
46899