Question

Mary buys a 10 meter spool of thread she uses 210 centimeters of it how much is left

Answer 1

Step-by-step explanation:

7.9 meter of spool is left.

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Answer 2

Answer:

7.9 m

Step-by-step explanation:

Total length of thread = 10m

Used length of thread = 210 m

                       1m = 100 cm

                       1cm = 1/100m

                       210 cm = 210/100 m = 2.1 m

Therefore length of thread that is left = 10m - 2.1 m

                                                              = 7.9 m