# Section A: Practice Problems Metric Measurement

## Section Summary

## Details

In this section, we measured the length of objects using different length units. We learned that the **centimeter **is a standard length unit and we measured lengths in centimeters using base-ten blocks, rulers, and meter sticks. We learned that rulers represent length units using tick marks to show a length from zero.

We also learned that a meter is a length unit in the metric system that is longer than a centimeter. When measuring longer lengths, it is easier to use a meter stick. A meter has the same length as 100 centimeters.

## Problem 1 (Pre-Unit)

How many connecting cubes long is the rectangle?

## Problem 2 (Pre-Unit)

Jada has 16 red counters. She has 7 fewer yellow counters than red counters. How many yellow counters does Jada have? Show your reasoning with words, pictures, or numbers.

## Problem 3 (Pre-Unit)

Which rectangle is the longest?

Which rectangle is the shortest?

## Problem 4 (Pre-Unit)

Find the value of each expression.

## Problem 5 (Lesson 1)

How many centimeters long is each rectangle?

## Problem 6 (Lesson 2)

Here is a rectangle.

How many centimeters wide is the rectangle?

How many centimeters tall is the rectangle?

## Problem 7 (Lesson 3)

How many centimeters long is each side of the triangle? Label each side.

## Problem 8 (Lesson 4)

Here is a rectangle.

Estimate how many centimeters long the rectangle is.

cm

Measure the rectangle and record the measurement.

cm

How does your estimate compare to the actual length?

## Problem 9 (Lesson 5)

A python is a snake that grows up to 9 meters in length.

Is the python longer or shorter than the animals you measured?

Is the python longer or shorter than the alligator and adult cobra together?

## Problem 10 (Lesson 6)

Andre’s snake is 85 centimeters long. His lizard is 28 centimeters long. How many centimeters longer is Andre’s snake than his lizard? Show your thinking.

## Problem 11 (Exploration)

Here are 2 rectangles.

Which rectangle do you think is longest?

Measure with a centimeter ruler to check your guess.

## Problem 12 (Exploration)

Look for objects in the classroom that are about 1 centimeter long. Measure them and see how close they are to 1 centimeter.

Look for objects in the classroom that are about 1 meter long. Measure them and see how close they are to 1 meter.