7-3 number stories with measures

7-3 number stories with measures

Math Message

Sanjay catches the bus at 2:05 PM. It takes him 40 minutes to get to hockey practice. Practice starts at 2:30 PM. How many minutes late will Sanjay be to practice?

Multiple Choice

How late will Sanjay be?

• 12 minutes

• 20 minutes

• 10 minutes

• 15 minutes

Guide to Solving Number Stories SRB p 30

Make sense of the problem

Make a plan

Solve the problem

Check

A sip of water is about 10 mL. About how many sips would it take to drink 130 mL?

STEP #1

First, we need to make sense of the problem, we know that a sip of water is about 10 mL and we want to find out the number of sips it would take to drink 130 mL.

STEP #2

Next, make a plan. What do you have to do to find the number of sips it will take to drink 130 mL?

Open Ended

What do you have to do to find the number of sips it will take to drink 130 mL?

STEP #2 Make a plan

You might have said,
Count by 10s until you reach 130
Reason about the number of groups of 10 in 100.
Think of a related multiplication problem. 

Draw a sketch of a beaker with a measurement scale of 10 mL.

STEP #3 Solve the problem

Use your favorite strategy to solve the problem.

STEP#4 Check

The final step in the guide to solving number stories is to check your answer.

You could try a different strategy to see if you get the same answer.

Ask yourself does your answer make sense? How do you know?

Try this using the guide to solving number stories.

A runner takes larger sips after a race. She drinks about 20 mL per sip. How many sips does she take to drink the 180 mL in her water bottle?

Multiple Choice

How many sips does the runner take?

• 10 sips

• 12 sips

• 9 sips

• 5 sips

Complete #1 on Math Journal page 224

Multiple Choice

Does Kiana have enough ribbon?

• Yes

• No

Last Slide!

Keep working on Math Journal page 224, remember to pay attention to what is being measured and the number of units.