Problem Solving
How do you use what you have learned to problem solve?
Goal:
Goal:
Practice!
Goal: Apply what you have learned about multiplying by 10 and 5 to solve a word problem.
It is time to problem solve! Ava is so excited that her family is having so many guests for Thanksgiving. Follow the problem-solving steps to help Ava figure out how many chairs are needed.
Word Problem Solving Steps
- Read the problem.
- Look for important information.
- Write a math sentence.
- Choose a way to solve.
- Solve and label your answer.
Read the Problem
Ava needs 1 chair per guest. She starts with the first table. Ava counts 10 guests. How many chairs does she need altogheter? The 1 is highlighted in yellow. The 10 is highlighted in red. How many chairs does she need altogether is underlined.
The first step is to read. Then read the problem again! It is helpful to read the problem as many times as you need to in order to see all of the important information!
Find the Important Information
Ava needs 1 chair per guest. She starts with the first table. Ava counts 10 guests. How many chairs does she need altogheter? The 1 is highlighted in yellow. The 10 is highlighted in red. How many chairs does she need altogether is underlined.
The first step is to read. Then look for the important information. The problem has the information you need. There are numbers, a key word, and a question. Look for the important numbers. Click the Show Me button to see how you did!
Ava needs 1 chair per guest. She starts with the first table. Ava counts 10 guests. How many chairs does she need altogheter? The 1 is highlighted in yellow. The 10 is highlighted in red. How many chairs does she need altogether is underlined. The word altogether is circled.
10 and 1 are the important numbers. “Altogether” is a key word, and the last sentence, the question, is important information.
Write an expression and an equation.
Ava needs 1 chair per guest. She starts with the first table. Ava counts 10 guests. How many chairs does she need altogheter? The 1 is highlighted in yellow. The 10 is highlighted in red. How many chairs does she need altogether is underlined.
10 and 1 are the important numbers. These numbers are also the factors of an expression. Write a multiplication expression. Click the Show Me button to see how you did!
Now add an equal sign to make the expression an equation! The product will go after the equal sign. Click the Show Me button to see!
Choose a Way to Solve
Ava needs 1 chair per quest. She starts with the first table. Ava counts 10 guests. How many chairs does she need altogheter? The 1 is highlighted in yellow. The 10 is highlighted in red. How many chairs does she need altogether is underlined.
You need to multiply 10 times 1. You can use a multiplication chart to find the product. Find the first factor, 10, in the first column to the left, and the second factor, 1, in the first row across the top. Where they meet is your product.
A multiplication chart. The first column is numbered 0 to 10. The first row is numbered 0 to 10.
Solve and Label Your Answer
Ava needs 1 chair per guest. She starts with the first table. Ava counts 10 guests. How many chairs does she need altogheter? The 1 is highlighted in yellow. The 10 is highlighted in red. How many chairs does she need altogether is underlined.
A multiplication chart. The first column is numbered 0 to 10. The first row is numbered 0 to 10. The 10 is highlighted in the first column. The 1 is highlighted in the first row. They meet at the 10.
Click the Show Me button to see how you did!
The factors 10 and 1 meet at 10.
\({10 \times 1 = 10}\)
The answer needs to have a label word. The number and word will answer the question in the problem!
Question
How many chairs does she need altogether?
10 chairs
Try to solve the next problems on your own. See if you can answer these problems from your memory of the multiplication facts of 10 and 5.
Read and Solve
Ava has 5 groups of 7 bowls. How many bowls does she have in all?
You can skip count by 5 seven times to find the answer. You can also multiply \({10 \times 7}\) and take half of the product.
Correct! You skip counted by 5 seven times to find the answer.
You can skip count by 5 seven times to find the answer. You can also multiply \({10 times 7}\) and take half of the product.
Ava has 10 groups of 10 napkins. How many napkins does she have in all?
Correct! you swapped the order of the factors, and skip counted by 2 ten times to find the answer.
If you swap the order of the factors, you can skip count by 2 ten times to find the answer. You can also add 10 to itself.
If you swap the order of the factors, you can skip count by 2 ten times to find the answer. You can also add 10 to itself.
You got # out of # correct. Click the Retry button for another attempt.
You got a perfect score. Great job!