#### Parent Mathing Tip #11: Money

These tips give parents ideas for math exercises that will develop their child's math abilities. Today’s parent tip for “mathing” with your child focuses on money.

There are so many fun ways to pass our time. And whether we’re fishing, visiting theme parks or jet skiing, there are always opportunities to put math into the mix.

This week’s word problems will help your child think critically and fine-tune their math skills while pondering their own favorite hobbies. Look below and choose the one that’s the right skill level for your child. Have them give it a try. And when they feel they’ve found the answer, check their solution against ours.

Questions

**Lower Elementary:**

*Question:* Chloe had an excellent fishing day. She caught 6 snappers, 4 mackerels, 1 grouper, and 1 soggy boot. She threw half the snappers and half the mackerels back into the ocean. How many fish did she take home?

**Upper Elementary:**

*Question:* Landon goes to a theme park where ride tokens cost 25¢. A roller coaster ride takes 3 tokens. A ride on the Ferris wheel takes 5 tokens. Landon rides the roller coaster and the Ferris wheel 7 times each. How much money did Landon spend on rides?

**Middle School:**

*Question**:* A hamster and a guinea pig are running on wheels. The hamster’s wheel is 6 inches in diameter. The guinea pig’s wheel is 18 inches in diameter. How much farther does the guinea pig run for each rotation of its wheel?

**High School and Up:**

*Question:* It costs $20.00 to rent a jet ski, plus $1.50 for each hour of use, plus the cost of gas. James rents a jet ski for 2 hours. He uses 3 litres of gas, which costs $6.98 per decalitre. How much did the jet ski rental cost altogether?

Solutions

Excellent! Are you ready to check your child’s answer? Look below to see if their solution matches ours.

**Lower Elementary:**

*Answer:* 6 fish

*Solution:* Chloe caught 6 + 4 + 1 = 11 fish in total. She threw 3 snappers back because half of 6 is 3, and she also threw 2 mackerels back because half of 4 is 2. That means she went home with 11 – 3 – 2 = 6 fish.

**Upper Elementary:**

*Answer:* $14.00

*Solution:* Three tokens for the roller coaster cost 25¢ × 3 = 75¢. Five tokens for the Ferris wheel cost 25¢ × 5 = $1.25. The total cost for 7 rides on the roller coaster cost $0.75 × 7 = $5.25, and 7 rides on the Ferris wheel cost $1.25 × 7 = $8.75. So, Landon spent $5.25 + $8.75 = $14.00 on rides.

**Middle School:**

*Answer**:* 12π inches

*Solution:* The formula we use to find the circumference of a circle is C = πd, d being the diameter of the circle. The hamster runs π × 6 = 6π inches. The guinea pig runs π × 18 = 18π. So, the guinea pig runs 18π – 6π = 12π inches farther than the hamster.

**High School and Up:**

*Answer:* $25.09

*Solution:* To find the price of the rentals, we can use the expression C = $20.00 + $1.50t + $6.98d wherein C is the total cost of the rental, t is the number of hours spent with the jet skis, and d is the decalitres of gas used. James rented 1 jet ski for 2 hours and used 0.3 decalitres of gas, so he spent $20.00 + $1.50 × 2 + $6.98 × 0.3 = $25.09 after rounding.

Mathnasium meets your child where they are and helps them with the customized program they need, for any level of mathematics.

- Find a location
- Get a math skills assessment for your child
- Your child will complete a customized learning plan

Get Started by Finding a Local Centre