Advanced Mathematics Primary 1 Length and Mass

A ribbon is 85 cm long. Mei Ling cuts off a piece that is 38 cm long. What is the length of the remaining ribbon?

A 47 cm
B 43 cm
C 123 cm
D 52 cm
Show Worked Solution

Worked Solution

Step 1: Subtract the length cut off from the total length. 85 cm − 38 cm Step 2: Subtract the ones: 5 − 8. Need to borrow. 15 − 8 = 7. Step 3: Subtract the tens (with borrow): 7 − 3 = 4. Answer: 47 cm

Correct answer: 47 cm

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