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Multiplying Mentally
Correct Answers:
1.
48 × 10 =
2.
50 × 60 =
3.
78 × 100 =
4.
300 × 400 =
5.
412 × 1000 =
6.
568 × 10 000 =
7.
5 × 20 =
8.
3 × 60 =
9.
4 × 30 =
10.
3 × 70 =
11.
700 × 900 =
12. 
2 × 5 × 1 =