## Math Expressions Common Core Grade 2 Unit 3 Lesson 7 Answer Key Estimate and Measure with Inches

**Math Expressions Grade 2 Unit 3 Lesson 7 Homework**

Question 1.

Find five objects at home to measure in inches. Choose objects that are less than 1 yard (36 in.) long. Estimate and measure the length of each object. Measure to the nearest inch. Complete the table.

Answer:

Explanation:

The above objects are less than 1 yard.

One can measure the actual length of the objects with the tape.

Object lengths may vary from one to one.

So, we can estimate the length nearer to the actual length.

Question 2.

Plot the data from the last column ¡n Exercise I on the line plot.

Answer:

Explanation:

One can measure the actual length of the objects with the tape.

Object lengths may vary from one to one.

So, we can estimate the length nearer to the actual length.

Plot the length of the objects on number line.

Question 3.

Find five objects at home to measure in feet or yards. Complete the table. Remember to include units with your measurements.

Answer:

Explanation:

One can measure the actual length of the objects with the tape.

Object lengths may vary from one to one.

So, we can estimate the length nearer to the actual length.

**Math Expressions Grade 2 Unit 3 Lesson 7 Remembering**

**Make a matching drawing or draw comparison bars. Solve the problem. Show your work.**

Question 1.

Erin has 6 grapes. Cody has 8 more grapes than Erin. How many grapes does Cody have?

Answer:

Cody has14 Grapes

Explanation:

Erin has 6 grapes

Cody has 8 more grapes than Erin

So, total grapes with Cody = 6 + 8 = 14

8 + 2 + 4( Make a ten method)

10 + 4 = 14

**Under the coins, write the total amount of money so far. Then write the total using $.**

Question 2.

Answer: $ 0.32

Explanation:

1 dollar = 100 cents

32 cents = $ 0.32

**Label the shapes using the words in the box.**

cube

quadrilateral

pentagon

hexagon

Question 3.

Answer:

Hexagon

Explanation:

In geometry, a hexagon can be defined as a polygon with six sides.

The two-dimensional shape has 6 sides, 6 vertices and 6 angles.

“Hexa” means six and “gonia” means corner angle.

Question 4.

Answer:

Quadrilateral

Explanation:

In geometry, a quadrilateral is a closed shape.

It is formed by joining four points among which any three points are non-collinear.

4 sides of a quadrilateral may or may not equal.

Question 5.

**Stretch Your Thinking** Explain why we use rulers instead of hands or fingers to measure things.

Answer:

Rulers are standard units for the measurements of lengths of the things,

Explanation:

The hands or fingers lengths vary person to person as they may be short or long in height, for correct measurements.

Rulers are standard units for the measurements of lengths of the things.