Estimation Techniques in Mathematics

These flashcards cover the principles of rounding to significant figures and estimating values in operations such as addition and multiplication.

The estimated value of 67.8 rounded to 1 significant figure is __.

70.

The estimated value of 2.38 rounded to 1 significant figure is __.

2.

The estimated value of 4.803 rounded to 1 significant figure is __.

5.

The estimated value of 29.87 rounded to 1 significant figure is __.

30.

The estimated value of 9.78 x 10 (in scientific notation) rounded to 1 significant figure is __.

10.

The estimated value of 2.04 x 10° (in scientific notation) rounded to 1 significant figure is __.

2 x 10°.

The formula to estimate the value of an expression is __.

Round each number to 1 significant figure and then perform the operation.

When estimating the sum of 4.803 + 29.87, the rounded values are and .

5 and 30.

Following the estimation process, the estimated result for 67.8 x 2.38 is __.

140.

The result of estimating 4.803 + 29.87 is __.

35.