Question

peter cuts a piece of string into 2 length. One is 4.2cm long ,one is 3.5cm long .How long was the string before it was cut?



please can some explain the answer for me

Answer 1

Answer:

7.7cm long

Step-by-step explanation:

4.2cm + 3.5cm = 7.7cm

4cm + 3cm = 7cm

0.2cm + 0.5cm = 0.7cm

7cm + 0.7cm = 7.7cm