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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
3 5 5
3 6 ×
6 × 5 =
30
6 × 50 =
300
6 × 300 =
1800
30 × 5 =
150
30 × 50 =
1500
30 × 300 =
+ 9000
12780