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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
5 8 0
3 2 ×
2 × 0 =
0
2 × 80 =
160
2 × 500 =
1000
30 × 0 =
0
30 × 80 =
2400
30 × 500 =
+ 15000
18560