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

Answer:

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

Answer:

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

Answer:

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

Answer:

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

Answer:

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

Answer:

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

Answer:

50 mm

Explanation:

We know that

1 cm = 10 mm

5 cm = 5 × 10

= 50 mm

b. 60 mm = ____________ cm

Answer:

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

Answer:

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

Answer:

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

Answer:

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

Answer:

250 mm

Explanation:

We know that

1 cm = 10 mm

We need to find 25 cm in mm.

25 × 10 = 250 mm