Go Math Grade 5 Chapter 4

Front

What is the cost of 0.5 pounds of string beans if they are priced at $0.79 per pound?

Back

To find the total cost, multiply the price per pound by the number of pounds: 0.79 * 0.5 = $0.395, which is $3.95.

Front

How do you solve the equation n x 0.2 = 0.06 for n?

Back

To solve for n, divide both sides of the equation by 0.2: n = 0.06 / 0.2 = 0.3.

Front

What is the product of 0.9 and 2.46?

Back

0.9 x 2.46 = 2.214.

Front

What is the result of multiplying 0.07 by 0.9?

Back

0.07 x 0.9 = 0.063.

Front

What is the mistake in the multiplication 6.8 x 1.2 = 816?

Back

The mistake is that a decimal is needed between the 8 and 1, the correct answer is 8.16.

Front

What is the formula to calculate the total cost of an item based on its price per unit and quantity purchased?

Back

Total Cost = Price per Unit x Quantity.

Front

How do you convert a decimal multiplication problem into a fraction multiplication problem?

Back

To convert, express each decimal as a fraction (e.g., 0.2 = 2/10) and then multiply the fractions.

Front

What is the importance of placing the decimal point correctly in multiplication?

Back

Placing the decimal point correctly ensures the accuracy of the result, as it affects the value of the product.

Front

How do you check the accuracy of a multiplication problem involving decimals?

Back

You can check by estimating the product or by performing the multiplication again and verifying the placement of the decimal.

Front

What is the relationship between multiplication and division in solving equations?

Back

Multiplication and division are inverse operations; you can use one to check the result of the other.