Fun at Class Party!

Hand span, footstep, and paper strings are informal ways to measure length., A metre rod and an inch tape are formal tools to measure length., A one-metre rope can be made by marking one metre on a rope and tying knots., You can recheck a rope after making it to confirm it measures one metre.

The chapter names hand span, footstep, and paper strings as informal words used for measuring length, while metre rod and inch tape are formal tools. It also says a metre-long rope is made by marking one metre on a rope and then checking again whether it measures one metre. The statement about always placing lengths next to each other is not true because the chapter says this is not always possible.

12 pieces

Wall length = 6 metres. Each decoration paper = half metre = 0.5 metre. Number of pieces needed = 6 ÷ 0.5 = 12 pieces.

False

This is generally true for many people, but not always exactly equal. Body proportions can vary from person to person. Some people have longer arms relative to their height, while others have shorter arms.

Her jump is shorter than one metre

One metre = 100 centimetres. Sita's jump = 75 centimetres. Since 75 < 100, her jump is shorter than one metre by 25 centimetres.