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3 cijfers X 3 cijfers met hulp [1]

3 cijfers X 3 cijfers met hulp [1]

 
3 8 0
2 7 6 ×
6 × 0 = 0
6 × 80 = 4 8 0
6 × 300 = 1 8 0 0
70 × 0 = 0
70 × 80 = 5 6 0 0
70 × 300 = 2 1 0 0 0
200 × 0 =
0
200 × 80 =
16000
200 × 300 =
+ 60000
104880