Page 28 - NUMINO Challenge_A2

3 Line segment AE is 8 cm long and is divided into four line segments as
shown below. Line segment AD is 5 cm long, and line segment BE is 6 cm
long. Out of line segments AB, BC, CD, and DE, which length(s) cannot be
measured?

5 cm

AB CD E
6 cm

Key Point
First, find the length of line
segment BD.

4 One 1-g weight, one 4-g weight, and one 6-g weight can be placed on
one side of a balance to find dif ferent masses. Find the masses that
can be measured with these weights and a balance.

1g 4 g 6 g

Key Point
Find the measurable
masses by finding the sum
of all the weights.

25Measurement