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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
2 4 9
3 3 ×
3 × 9 =
27
3 × 40 =
120
3 × 200 =
600
30 × 9 =
270
30 × 40 =
1200
30 × 200 =
+ 6000
8217