General
General
Easy
Question
Mary buys a reel of thread for sewing. There are 10 meters of thread on the real. She uses 210 cm. The length of thread left on the reel is ________ centimeters.
- 790 cm
- 1000 cm
- 210 cm
- Can’t define
Hint:
Step 1:Convert the meter into centimeter
1m = 100cm
Step 2:Subtract the thread on reel used by Mary from the complete reel of thread.
The correct answer is: 790 cm
Total length of thread which Mary buys = 10m
1m = 100cm
10m = 1000cm
She uses 210 cm, Then remaining thread = 1000cm – 210cm
= 790cm
The alternative method is, convert the centimeter into meter and subtracting.
