Multiplying and Dividing Decimals Objective Multiply and divide

Multiplying and Dividing Decimals Objective: Multiply and divide decimals. STES

Multiplying and Dividing Decimals When multiplying decimals, the number of decimal places in the product is the same as the sum of the decimal places in the factors.

Multiplying and Dividing Decimals Example 1 Solve y = (10. 7)(0. 13). 10. 7 1 decimal place

Multiplying and Dividing Decimals Example 1 Solve y = (10. 7)(0. 13). 10. 7 x 0. 13 1 decimal place 2 decimal places

Multiplying and Dividing Decimals Example 1 Solve y = (10. 7)(0. 13). 10. 7 x 0. 13 321 1 decimal place 2 decimal places

Multiplying and Dividing Decimals Example 1 Solve y = (10. 7)(0. 13). 10. 7 x 0. 13 321 1070 1 decimal place 2 decimal places

Multiplying and Dividing Decimals Example 1 Solve y = (10. 7)(0. 13). 10. 7 x 0. 13 321 1070 1. 391 1 decimal place 2 decimal places 3 decimal places

Multiplying and Dividing Decimals Example 1 Solve y = (10. 7)(0. 13). 10. 7 x 0. 13 321 1070 1. 391 y = 1. 391 1 decimal place 2 decimal places 3 decimal places

Multiplying and Dividing Decimals To divide decimals, multiply both the divisor and the dividend by a power of ten so that the divisor is a whole number. Then divide.

Multiplying and Dividing Decimals Example 2 Solve y = 2. 25 ¸ 2. 5.

Multiplying and Dividing Decimals Example 2 Solve y = 2. 25 ¸ 2. 5. Estimate: 2 ¸ 2 = 1 2. 5)2. 25

Multiplying and Dividing Decimals Example 2 Solve y = 2. 25 ¸ 2. 5. Estimate: 2 ¸ 2 = 1 2. 5)2. 25 Multiply by 10 to get a whole number in the divisor.

Multiplying and Dividing Decimals Example 2 Solve y = 2. 25 ¸ 2. 5. Estimate: 2 ¸ 2 = 1 2. 5)2. 25 Multiply by 10 to get a whole number in the divisor. 0. 9 25)22. 5 225 Divide as with whole numbers.

Multiplying and Dividing Decimals Example 2 Solve y = 2. 25 ¸ 2. 5. Estimate: 2 ¸ 2 = 1 2. 5)2. 25 Multiply by 10 to get a whole number in the divisor. 0. 9 25)22. 5 225 Divide as with whole numbers. x = 0. 9 Compare to the estimate.