Consider 16–20.5. What is the solution? Represent the subtraction on a horizontal number line diagram.
The solution to 16 - 20.5 is -4.5.
To represent this on a horizontal number line diagram, we start at 16 and move left (towards the negative direction) by 4.5 units. So, the point representing the solution -4.5 will be to the left of 16 on the number line.
To find the solution for 16 – 20.5, we can subtract 20.5 from 16. Let's break it down step-by-step:
Step 1: Start with the minuend, which is 16.
Step 2: Subtract the subtrahend, which is 20.5, from the minuend.
16 - 20.5 = -4.5
The solution is -4.5.
To represent this subtraction on a horizontal number line diagram, follow these steps:
Step 1: Draw a horizontal line.
Step 2: Mark a point at 0 on the left side of the line to represent 0.
Step 3: Mark a point to represent 16 by going to the right side of the line and placing the point after an appropriate length.
Step 4: Mark a point to represent -4.5 by going to the left side of the line and placing the point appropriately.
Step 5: Draw a line segment connecting the points representing 16 and -4.5.
The horizontal number line diagram should show the line segment connecting the points representing 16 and -4.5, with 0 placed to the left of 16.