Answer:
790cm
Explanation:
Briana buys a reel of thread for sewing. There are 10 m of thread on the real. Her brother in grade 4 used 210 cm. How much is left on the reel in centimeters?
1m = 100cm
10m = x
x = 10 × 100cm
x = 1000cm
The total number of thread on the reel = 1000cm
The amount of thread left on the reel is calculated as:
The total number of thread on the reel - The amount of thread on the reel that was used.
= 1000cm - 210cm
= 790cm