Estimating Costs in Word Problems

The video tutorial explains how to approach estimation word problems, emphasizing the importance of recognizing keywords like 'about' or 'approximately' to determine when an estimate is sufficient. It provides guidelines for rounding numbers, especially when dealing with money, and demonstrates how to estimate total costs and differences between prices. The tutorial stresses the importance of rounding numbers before performing calculations to save time and ensure accuracy. It concludes with tips for using estimation effectively, including checking multiple-choice options for rounding clues.

What do the keywords 'about' or 'approximately' indicate in a word problem?

• The need to use a calculator

• The need for an exact answer

• The need for an estimated answer

• The need to ignore the problem

If a problem asks for an approximate answer, what should you do?

• Ignore the problem

• Estimate the answer

• Find the exact answer

• Use a calculator

What should you do if a word problem uses the word 'about'?

• Use a calculator

• Ignore the problem

• Estimate the answer

• Find the exact answer

When dealing with money, to which place value should you round if not specified?

• Tenths

• Thousandths

• Hundredths

• Whole numbers

If a hat costs $14, a shirt $18, jeans $30, and socks $2, what is the estimated total cost?

• $60

• $68

• $64

• $70

When estimating the total cost of multiple items, what is the first step?

• Round each item's price

• Add the exact prices

• Divide the prices

• Multiply the prices

What is the estimated total cost if the prices are rounded to the nearest ten?

• $90

• $60

• $70

• $80

How much more do the jeans cost than the shirt, based on the estimated prices?

• $10

• $12

• $14

• $16

If the exact difference between two prices is $11.12, what is the estimated difference when rounded to whole numbers?

• $13

• $10

• $11

• $12

What should you do if you want to find the difference between two estimated prices?

• Divide the prices

• Multiply the prices

• Add the prices

• Subtract the prices