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?
8 * 40 = 320 cm
3 metres = 300 cm
20cm
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To find out how many centimeters shorter the ribbon is than the required length, we first need to determine the actual length of the ribbon, taking into account that 1 meter is equal to 100 centimeters.
The ribbon is 3 meters long, which is equal to:
3 meters x 100 centimeters/meter = 300 centimeters
Now, we need to calculate the total length of the 8 pieces of ribbon. Each piece is 40 centimeters long, so to find the total length, we multiply:
8 pieces x 40 centimeters/piece = 320 centimeters
Next, we can subtract the actual length of the ribbon from the total length needed to find out how many centimeters short it is:
320 centimeters (total length) - 300 centimeters (length of the ribbon) = 20 centimeters
Therefore, the ribbon is 20 centimeters shorter than the required length of 8 pieces, each 40 centimeters long.