P4 Question on Simultaneous Concept

by Christina Yuen

Hi Zach,

Could you advise how to solve this question? Kindly guide on the model drawing too.

The question is:
A watch costs $25 more than a calculator. 3 such watches cost as much as 8 such calculators. What is the cost of each calculator?

Step 1: This question involves the Comparison Concept and the Repeated Variable Concept. Since A watch costs $25 more than a calculator, we draw 1 box to represent the amount of money a calculator cost and draw an identical box plus another box marked with "$25" to show that the watch cost $25 more than a calculator.

To see the rest of the answer, click here

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Ask Grade 4 Question or Post Answer/Comment.

Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.