Rate of change (Level 3 word problems) Quiz

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#1 of 8: Mild

Rate of change (Level 3 word problems)

A truck driver checked his refrigerated trailer's temperature before and after their deliveries yesterday.<ul><li> The temperature in the trailer at the beginning of the day was `4°`F. </li><li>The temperature in the trailer decreased `6°`F per hour for `3` hours while they drove.</li><li>During the next delivery, the temperature in the truck's refrigerated trailer increased by `2°`F per hour for `2` hours.</li></ul>Questions:<ul><li>What was the temperature after `3` hours?</li><li> What was the temperature after the following `2` hours?</li></ul><highlight data-color="#666" data-style="italic">Round to the nearest hundredth if needed. </highlight>

#2 of 8: Mild

Rate of change (Level 3 word problems)

In 1980, the closing balance of the account of Mrs. Sullivan was `$33500`. She added funds to it at a steady rate of `$450` per year for the next `25` years. Then she retired from work and started withdrawing from the account at the rate of `$5000` per year.(a) What was the balance of her account `25` years after 1980? (b) What was the balance of her account after `10` more years?Round to the nearest hundredth if needed.

#3 of 8: Spicy

Rate of change (Level 3 word problems)

Nathan opened an account with `$100`. He deposited `$20` from his pocket money weekly for the next `2 1/2` weeks. Thereafter, he spent `$60` to commute to his college weekly for the following `3` weeks.a. What was his account balance after `2 1/2` weeks?b. What was her account balance after the following `3` weeks?Round to the nearest hundredth if needed.

#4 of 8: Spicy

Rate of change (Level 3 word problems)

An investor looked at the price of a stock throughout `2020`.<ul><li>The initial price of the stock was `$10`. </li><li>The price of the stock increased at a steady rate of `$30` per month for the first `3 1/2` months of the year.</li> <li>Then, the price fell at the rate of `$10` per month for the next `7` months.</li></ul>Questions:<ul><li>What was the price of the stock after the first `3 1/2` months?</li><li>What was the price of the stock after the following `7` months?</li></ul><highlight data-color="#666" data-style="italic">Round to the nearest hundredth if needed. </highlight>

#5 of 8: Medium

Rate of change (Level 3 word problems)

Antarctica's average temperature was recorded over a several months.<ul><li>The average temperature for the month of June was `-76°`F. </li><li>For `3` months, the average temperature decreased by `2.5°`F every month. </li><li>Then, for `2` months, the average temperature increased by `12°`F every month.</li></ul>Questions: <ul><li>What was the average temperature in Antarctica after `3` months?</li><li>What was the average temperature in Antarctica after the following `2` months?</li></ul><highlight data-color="#666" data-style="italic">Round to the nearest hundredth if needed. </highlight>

#6 of 8: Medium

Rate of change (Level 3 word problems)

A science experiment requires a liquid to be heated up, and then cooled off again. At the start of the experiment, the temperature of the liquid is `-14`°F. The scientist then increases the temperature of the liquid by `7.9`°F per minute for `3.5` minutes. Then, the scientist decreases the temperature of the liquid by `6`°F per minute for `2` minutes.a. What was the temperature after `3.5` minutes?b. What was the temperature after the following `2` minutes?Round to the nearest hundredth if needed.

#7 of 8: Medium

Rate of change (Level 3 word problems)

To make mint-flavored ice cubes, Elijah used a blender to make mint juice and poured the juice into ice cube trays. <ul><li>The temperature of the mint juice inside the blender was `24`°C. </li><li>After he put the ice tray inside the freezer, the temperature dropped by `6.5`°C for the first `2` hours. </li><li>He then turned on the blast freeze option of the freezer, and the temperature dropped by `9`°C per hour for the next `3` hours.</li></ul>Questions:<ul><li>What was the temperature of the mint juice after `2` hours?</li><li>What was the temperature of the mint juice after the following `3` hours?</li></ul><highlight data-color="#666" data-style="italic">Round to the nearest hundredth if needed. </highlight>

#8 of 8: Medium

Rate of change (Level 3 word problems)

Mary kept track of the changes in her bank balance.<ul><li>Mary had an account balance total of `-$24.50` at the beginning of the month. </li><li>She added `$40` per day to her account for the following `12` days. </li><li>Then, for the next `7` days, she took out `$32` each day for travel expenses for work.</li></ul>Questions:<ul><li>What was her account balance for the next `12` days?</li><li>What was her account balance after the following `7` days?</li></ul><highlight data-color="#666" data-style="italic">Round to the nearest hundredth if needed. </highlight>

Rate of change in any quantity refers to the change in quantity over the period. Example: Time taken in covering distance in travelling from one place to another. You can share this rate of change quiz with your students to check their knowledge on this concept. This rate of change word problems level 3 quiz is interesting and will help them understand the concept easily.

You can also try our Rate Of Change (Level 3 Word Problems) Worksheet and Rate Of Change (Level 3 Word Problems) Problems as well for a better understanding of the concepts.

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Grade 7

Signed Number Operations

7.NS.A.3