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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
3 6 9
3 1 ×
1 × 9 =
9
1 × 60 =
60
1 × 300 =
300
30 × 9 =
270
30 × 60 =
1800
30 × 300 =
+ 9000
11439