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3 cijfers X 3 cijfers met hulp [1]

3 cijfers X 3 cijfers met hulp [1]

 
9 3 2
5 5 9 ×
9 × 2 = 1 8
9 × 30 = 2 7 0
9 × 900 = 8 1 0 0
50 × 2 = 1 0 0
50 × 30 = 1 5 0 0
50 × 900 = 4 5 0 0 0
500 × 2 =
1000
500 × 30 =
15000
500 × 900 =
+ 450000
520988