Unit 7 Estimating Products & Quotients

Front

What is estimation in mathematics?

Back

Estimation is a method used to find an approximate value that is close to the actual value, often used to simplify calculations.

Front

How do you estimate the product of two decimal numbers?

Back

Round each decimal to the nearest whole number, then multiply the rounded numbers.

Front

What is the product of 2.6 and 8.9 when estimated?

Back

The estimated product is 3 x 9 = 27.

Front

Where do you place the decimal point in a product?

Back

Count the total number of decimal places in the factors and place the decimal point in the product accordingly.

Front

What is the estimated product of 68 and 7.38?

Back

The estimated product is 70 x 7 = 490.

Front

What is a quotient?

Back

A quotient is the result of dividing one number by another.

Front

How do you estimate the quotient of a number divided by a decimal?

Back

Round the decimal to a simpler fraction or whole number, then divide.

Front

What is the estimated quotient of 320 ÷ 0.08?

Back

The estimated quotient is 320 ÷ 0.1 = 3200.

Front

What does it mean if one number is greater than another in multiplication?

Back

If you multiply a number by a larger number, the product will be greater than if you multiply it by a smaller number.

Front

What is the best estimation expression for 46.8 × 5.9?

Back

The best estimation expression is 50 x 6.