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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
3 8 2
3 4 2 ×
2 × 2 =
4
2 × 80 =
160
2 × 300 =
600
40 × 2 =
80
40 × 80 =
3200
40 × 300 =
12000
300 × 2 =
600
300 × 80 =
24000
300 × 300 =
+ 90000
130644