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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
9 6 3
8 1 3 ×
3 × 3 =
9
3 × 60 =
180
3 × 900 =
2700
10 × 3 =
30
10 × 60 =
600
10 × 900 =
9000
800 × 3 =
2400
800 × 60 =
48000
800 × 900 =
+ 720000
782919