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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
3 7 3
3 4 1 ×
1 × 3 =
3
1 × 70 =
70
1 × 300 =
300
40 × 3 =
120
40 × 70 =
2800
40 × 300 =
12000
300 × 3 =
900
300 × 70 =
21000
300 × 300 =
+ 90000
127193