Variations of Comparison Model - "Less Than"

Step 1: Draw a box and write the number found after the word "than" in this box.

Step 2: Draw a dot at the top-right corner of the first box. This marks the starting point of the arrow we are about to draw next.

Step 3: Draw an arrow from the dot pointing to the left. (The arrow points to the left because it is a "less than" question.

Step 4: Since it is "less than", we are actually making the number 17 (starting number) smaller by 4. Hence, draw a second box directly below the arrow and the first box to show that the number 17 has been shortened by 4.

Step 5: Draw a last box next to the second box to make the model form a rectangle and write the unknown number (?) in this box.

From the model,

17 - 4 = ?
17 - 4 = 13

Thus, the answer is 13.

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.