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3 cijfers X 3 cijfers met hulp [1]

3 cijfers X 3 cijfers met hulp [1]

 
8 6 9
2 5 6 ×
6 × 9 = 5 4
6 × 60 = 3 6 0
6 × 800 = 4 8 0 0
50 × 9 = 4 5 0
50 × 60 = 3 0 0 0
50 × 800 = 4 0 0 0 0
200 × 9 =
1800
200 × 60 =
12000
200 × 800 =
+ 160000
222464