math
posted by Johnny .
1.Estimate 45 x 56 using frontend.
2.Estimate 45 x 56 using rounding.

1. 4 * 5
2. 50 * 50
http://www.aaamath.com/est73ax2.htm 
Estimate 45 and 56 using frontend estimation
posted by Johnny .
1.Estimate 45 x 56 using frontend.
2.Estimate 45 x 56 using rounding.
1. 4 * 5
2. 50 * 50
http://www.aaamath.com/est73ax2.htm
Estimate 45 and 56 using frontend estimation