Question

Detective Z has 64 inches of ribbon out of which Steady takes away 8 inches. How many inches of ribbon does Detective Z have now?
Use a mental math strategy to find the answer quickly.

• A. (i) 10 (ii) 62 (iii) 58
• B. (i) 10 (ii) 54 (iii) 56
• C. (i) 10 (ii) 54 (iii) 58
• D. (i) 10 (ii) 66 (iii) 56

Answer 1

The correct option is B (i) 10 (ii) 54 (iii) 56

Length of ribbon Detective Z has $=64\text{inches}$
Length of ribbon Steady takes away $=8\text{inches}$
Length of ribbon left $=64-8\text{inches}$
Using the mental math ability of compensation, we can solve the question.Therefore, Detective Z is left with 56 inches of ribbon.
Option C (i) 10 (ii) 54 (iii) 56 is the correct answer.