Using Estimation Strategies
Estimation by Rounding
Use rounding to estimate each sum or difference to the nearest tenth
1.) 9.82 – 1.76
2.) 14.17- 10.92
3.) 11.53 + 7.23
Use rounding to estimate each product to the nearest whole number
1.) 25.123 x 4.79
2.) 6.07 x 3.29
3.) 7.65 x 5.33
Front-End Estimation
Use front-end estimation to find each sum
1.) 5.43 + 2.67
2.) 7.18 + 5.89
3.) 24.21 + 16.03
Estimate using Compatible Numbers
Compatible Numbers: _______________________________________
1.) 32.2 ÷ 7.56
2.) 27.36 ÷ 3.14
3.) 76.5 ÷ 8.8
Reflect: Which method of estimation do you believe is the most accurate? Why?