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3 cijfers X 3 cijfers met hulp [2]

3 cijfers X 3 cijfers met hulp [2]

 
2 7 4
3 5 5 ×
5 × 4 = 2 0
5 × 70 = 3 5 0
5 × 200 = 1 0 0 0
50 × 4 =
200
50 × 70 =
3500
50 × 200 =
10000
300 × 4 =
1200
300 × 70 =
21000
300 × 200 =
+ 60000
97270