Question

Observe the number line, and identify the missing number to complete the given subtraction equation.

• A. 7
• B. 15
• C. 6
• D. 8

Answer 1

The correct option is D 8

Say:
Let’s observe the number line to find the missing number of the equation.

Steps:

• 15 is marked on the number line.
• 5 jumps are taken backward to reach 10.
• 15 – 5 = 10.
• 3 more jumps are taken backward to reach 7.
• 10 – 3 = 7.
• In all, 8 jumps are taken backward from 15.
• Subtract 8 from 15 to get the difference, 7, by breaking down 8 into 5 and 3.
• 15 – 8 = 7.
• Hence, option A is the answer.