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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
3 3 7
8 4 6 ×
6 × 7 =
42
6 × 30 =
180
6 × 300 =
1800
40 × 7 =
280
40 × 30 =
1200
40 × 300 =
12000
800 × 7 =
5600
800 × 30 =
24000
800 × 300 =
+ 240000
285102