Decimal Word Problems

What is the importance of estimating in decimal problems?

• Estimating helps to quickly assess the reasonableness of an answer before calculating the exact value.

• Estimating is only useful for whole numbers, not decimals.

• Estimating provides the exact answer without any calculations.

• Estimating is a method to avoid using calculators.

If carpeting costs $9.89 per yard, how much do you need for 7.4 yards?

• $65

• $75

• $80

• $70

If you have $45.60 and spend $12.75 and $3.45, how much do you have left?

• $25.00

• $29.40

• $30.00

• $27.50

What is the total cost of 7 bottles of apple juice at $3.15 each?

• $18.75

• $20.10

• $22.05

• $25.50

How can you check your work after solving a decimal problem?

• By reversing the operation (e.g., if you added, try subtracting)

• By ignoring the decimal and focusing on whole numbers

• By asking someone else to check your answer

• By using a calculator to verify the result

What strategies can help solve decimal word problems?

• Read the problem carefully, identify the question, translate words into mathematical operations, and solve step by step.

• Ignore unnecessary details and focus on the numbers only.

• Always convert decimals to fractions before solving.

• Use a calculator for all decimal calculations.

What is the total of 3.5 and 4.25?

• 6.50

• 7.25

• 7.75

• 8.00

Luis wants to save $60 and has earned $15.25, $10.50, and $13.30. How much more does he need?

• $15.50

• $20.95

• $25.00

• $18.75

What is the significance of place value in decimals?

• Place value determines the value of a digit based on its position relative to the decimal point, affecting calculations and comparisons.

• Place value is only important for whole numbers, not decimals.

• Place value indicates the number of digits in a decimal number.

• Place value is irrelevant in mathematical operations involving decimals.