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3 cijfers X 3 cijfers met hulp [1]

3 cijfers X 3 cijfers met hulp [1]

 
3 3 9
3 8 6 ×
6 × 9 = 5 4
6 × 30 = 1 8 0
6 × 300 = 1 8 0 0
80 × 9 = 7 2 0
80 × 30 = 2 4 0 0
80 × 300 = 2 4 0 0 0
300 × 9 =
2700
300 × 30 =
9000
300 × 300 =
+ 90000
130854