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3 cijfers X 3 cijfers met hulp [1]

3 cijfers X 3 cijfers met hulp [1]

 
6 4 6
3 7 5 ×
5 × 6 = 3 0
5 × 40 = 2 0 0
5 × 600 = 3 0 0 0
70 × 6 = 4 2 0
70 × 40 = 2 8 0 0
70 × 600 = 4 2 0 0 0
300 × 6 =
1800
300 × 40 =
12000
300 × 600 =
+ 180000
242250