Page 23 - NUMINO Challenge_M1

3. Unmarked Measurements

Measurable Length
A length can be measured using the sum or difference of lengths.

2 cm
3 cm

The paperclip The eraser is
is 3 cm. 2 + 3 = 5 (cm).

Unit Weights
Unit weights can be used to find the weight of objects.

If the unit weight is 1, the
weight of the bag is 1 4 4.

EExxpplloorree The following shows how 2 triangles with sides of 3 cm, 4 cm,
and 5 cm can be used to measure different lengths.

Length of A: 3 4 7 (cm) A Length of C: 5 (cm)
Length of B: 4 3 43
53

4 5C

1 (cm) B

EExxeerrcciissee Explain how to find the length of a 2 cm paperclip using two
triangles with sides of 3 cm, 4 cm, and 5 cm.

2 cm

20 NUMINO Challenge M1