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3 cijfers X 2 cijfers met hulp [2]

3 cijfers X 2 cijfers met hulp [2]

 
5 3 4
3 5 ×
5 × 4 =
20
5 × 30 =
150
5 × 500 =
2500
30 × 4 =
120
30 × 30 =
900
30 × 500 =
+ 15000
18690