A ribbon is 3 metres long. I need 8 pieces of ribbon each 40 cm long.

1.	A ribbon is 3 metres long. I need 8 pieces of ribbon each 40 cm long. How many centimetres shorter is the ribbon than the length I need?
Answer» 1 piece of 40 cm, so for 8 pieces ribbon needed is 40 x 8 = 320 cm. But ribbon is 3 metre = 300 cm long. So ribbon is shorter by 320 – 300 = 20 cm.

A ribbon is 3 metres long. I need 8 pieces of ribbon each 40 cm long. How many centimetres shorter is the ribbon than the length I need?

Answer»

1 piece of 40 cm, so for 8 pieces ribbon needed is 40 x 8 = 320 cm.

But ribbon is 3 metre = 300 cm long.

So ribbon is shorter by 320 – 300 = 20 cm.