10's and Estimations
10 x 45 = ?
450
12 x 17 = ?
204
360
15 x 12 = ?
180
12 x 13 = ?
156
20 x 80 = ?
1,600
25 x 32 = ?
800
35 x 21 = ?
735
22 x 34 = ?
748
18 x 26 = ?
468
50 x 40 = 2,000
42 x 64 = ?
2,688
1,972
42 x 39 = ?
1,638
42 x 28 = ?
1,176
80 x 73 = ?
5,840
38 x 51 = ?
1,938
83 x 68 = ?
5,644
62 x 73 = ?
4,526
63 x 87 = ?
5,481
6,000 x 63 = ?
378,000
38 x 524 = ?
19,912
89 x 235 = ?
20,915
92 x 85 = ?
7,820
89 x 98 = ?
8,722