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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
3 1 9
3 4 0 ×
0 × 9 =
0
0 × 10 =
0
0 × 300 =
0
40 × 9 =
360
40 × 10 =
400
40 × 300 =
12000
300 × 9 =
2700
300 × 10 =
3000
300 × 300 =
+ 90000
108460