# G7 Intro Unit 4 Review

Find the products mentally: 1. 2.

Han and Clare go shopping, and they each have a coupon. Han buys an item with a normal price of $15, and uses a 10% off coupon. How much does he save by using the coupon? Show or explain your reasoning. Han and Clare go shopping, and they each have a coupon. Clare buys an item with a normal price of$24, but saves $6 by using a coupon. For what percentage off is this coupon? Show or explain your reasoning. It takes Jada 20 minutes to walk to school. It takes Andre 80% as long to walk to school. How long does it take Andre to walk to school? For each problem, explain or show your reasoning. 1. 160 is what percentage of 40? 2. 40 is 160% of what number? 3. What number is 40% of 160? A store is having a 20%-off sale on all merchandise. If Mai buys one item and saves$13, what was the original price of her purchase? Explain or show your reasoning.

The original price of a scarf was $16. During a store-closing sale, a shopper saved$12 on the scarf. What percentage discount did she receive? Explain or show your reasoning.

Select all the expressions whose value is larger than 100.

Select all that apply
• A
• B
• C
• D
• E
• F
• G

Evaluate/Solve mentally. 1. 20 * 5 2. 20 * (0.8) 3. 20 * (0.04) 4. 20 * (5.84)

Calculate each product. NO CALCULATORS. 1. 2.

Calculate each product. Show your reasoning. 1. (5.6) * (1.8) 2. (0.008) * (7.2) 3. (1.6) * (0.215)

Write the following expressions as decimals. NO CALCULATOR. 1) 1 - 0.1 2) 1 - 0.1 + 10 - 0.01 3) 1 - 0.1 + 10 - 0.01 + 100 - 0.001

Find the quotients mentally. 1) 2) 3) 4)

Using long division like Lin did, find the value of each expression as a decimal. 1) 2) 3) 4) 5) 6)

Mai walked of a 30-mile walking trail. How many miles did Mai walk? Explain or show your reasoning.