# Spectrum Math Grade 4 Chapter 7 Lesson 6 Answer Key Measuring in Millimeters

This handy Spectrum Math Grade 4 Answer Key Chapter 7 Lesson 7.6 Measuring in Millimeters provides detailed answers for the workbook questions.

## Spectrum Math Grade 4 Chapter 7 Lesson 7.6 Measuring in Millimeters Answers Key The pencil is 8 centimeters or 80 millimeters long.
1 centimeter (cm) = 10 millimeters (mm)
1 cm = 10 mm

Use a ruler and pencil to finish the shape. Find the length of the missing side in millimeters.

Question 1.
a. ____________ mm
The length of the missing side is 20 mm.

Explanation:
By using a ruler and pencil we finished the shape of the given figure.
Below is the figure The length of the missing side is 2 cm.
2 × 10 = 20 mm

b. ____________ mm
The length of the missing side is 30 mm.

Explanation:
By using a ruler and pencil we finished the shape of the given figure.
Below is the figure The length of the missing side is 3 cm.
3 × 10 = 30 mm

Question 2.
a. ____________ mm
The length of the missing side is 50 mm.

Explanation:
By using a ruler and pencil we finished the shape of the given figure.
Below is the figure The length of the missing side is 5 cm.
5 × 10 = 50 mm

b. _____________ mm
The length of the missing side is 90 mm.

Explanation:
By using a ruler and pencil we finished the shape of the given figure.
Below is the figure The length of the missing side is 9 cm.
9 × 10 = 90 mm

Complete the following.

Question 3.
a. 7 cm = ____________ mm
70 mm

Explanation:
We know that
1 cm is equal to 10 mm
We need to find 7 cm is equal to how many mm.
7 × 10 = 70 mm

b. 2 cm = ____________ mm
20 mm

Explanation:
We know that
1 cm is equal to 10 mm
2 cm = 2 × 10
= 20 mm

Question 4.
a. 5 cm = ____________ mm
50 mm

Explanation:
We know that
1 cm = 10 mm
5 cm  = 5 × 10
= 50 mm

b. 60 mm = ____________ cm
6 cm

Explanation:
We know that
1 cm = 10 mm
we need to find 60 mm is how many cm
60 ÷ 10 = 6 cm

Question 5.
90 mm = _____________ cm
9 cm

Explanation:
We know that 1 cm = 10 mm
We need to find 90 mm is how many cm.
90 ÷ 10 = 9 cm.

b. 11 cm = ______________ mm
110 mm

Explanation:
We know that
1 cm = 10 mm
We need to find 11 cm in mm.
11 × 10 = 110 mm

Question 6.
a. 100 mm = ______________ cm
10 cm

Explanation:
We know that
1 cm = 10 mm
we need to find 100 mm in cm.
100 ÷ 10 = 10 cm

b. 25 cm = ______________ mm