Adding Using a Hundred Square
- Adding Using a Hundred Square – Introduction
- What Is a Hundred Square?
- Solving Addition Problems Using a Hundred Square – Examples
- Solving Addition Problems Using a Hundred Square – Practice
- Solving Addition Problems Using a Hundreds Chart – Summary
- Solving Addition Problems Using a Hundred Square – Frequently Asked Questions
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Basics on the topic Adding Using a Hundred Square
Adding Using a Hundred Square – Introduction
Mr. Squeaks and Imani have found themselves captured as pets! To escape, they need to solve equations using a hundred square grid. This method is a fantastic tool to help solve addition problems, see patterns or even just count. Get ready because today, we're going to practise using a hundred square together!
What Is a Hundred Square?
A hundred square is organised with numbers one to one hundred in columns and rows. When you read a hundred square, you read it like a book, from left to right. This visual tool helps us see how numbers increase and helps with adding numbers.
How do you use hundred square? Here are the steps to tackle addition using a hundred square:
| Step # | Action |
|---|---|
| 1 | Circle the bigger addend, or number, on the chart. |
| 2 | Count on the amount of the second addend. |
| 3 | The number you land on is the sum, or answer. |
| 4 | Check your answer to ensure it makes sense with the problem. |
Let's practise understanding this method of using a hundred square as an addition chart with a few examples.
Solving Addition Problems Using a Hundred Square – Examples
Example 1:
The equation Mr. Squeaks and Imani need to solve is 15 + 6.
Steps to Solve the Problem:
| Step # | Action |
|---|---|
| 1 | Circle the bigger addend on the chart: 15. |
| 2 | Count on six more: 1, 2, 3, 4, 5, 6. |
| 3 | The number you land on is 21. |
The sum is 21.
Example 2:
The next equation is 23 + 7.
Steps to Solve the Problem:
| Step # | Action |
|---|---|
| 1 | Circle the bigger addend on the chart: 23. |
| 2 | Count on seven more: 1, 2, 3, 4, 5, 6, 7. |
| 3 | The number you land on is 30. |
The sum is 30.
Example 3:
The next equation is 31 + 8.
Steps to Solve the Problem:
| Step # | Action |
|---|---|
| 1 | Circle the bigger addend on the chart: 31. |
| 2 | Count on eight more: 1, 2, 3, 4, 5, 6, 7, 8. |
| 3 | The number you land on is 39. |
The sum is 39.
Solving Addition Problems Using a Hundred Square – Practice
Now, let's put your skills to the test. Solve these problems on your own, and check the solutions when you're ready!
Solving Addition Problems Using a Hundreds Chart – Summary
Key Learnings from this Text:
- Solving problems using a hundred square can be achieved by following these steps:
| Step # | Action |
|---|---|
| 1 | Circle the bigger addend, or number, on the chart. |
| 2 | Count on the amount of the second addend. |
| 3 | The number you land on is the sum, or answer. |
| 4 | Check your answer to ensure it makes sense with the problem. |
- Mastering the use of a hundred square is an important foundational maths skill.
Keep practising these steps, have a go at our hundred square interactive exercises and you'll become a pro at using a hundred square to add numbers! Check out more fun maths challenges and exercises on our website to continue sharpening your skills.
Solving Addition Problems Using a Hundred Square – Frequently Asked Questions
Transcript Adding Using a Hundred Square
"I can't believe we've become captured as pets! Maybe we can use your beam to get us out." Imani has found some things in the cage to create a portal using their beam. Hang on, what's this? There's an equation on the door! "I guess we need to solve it to make the door open." Mr. Squeaks and Imani can use "Adding Using a Hundred Square" to help them open the doors. There are many different tools and strategies to help us add. Today we will use a hundred square, an incredible tool to help solve problems, see patterns or even just count! A hundred square is organised with numbers one to one hundred in columns and rows. Remember, when you read a hundred square you read it like a book, from left to right. The equation Mr. Squeaks and Imani need to solve first is fifteen plus six. When using the hundred square to solve addition problems, start by circling the bigger addend, or number, on the chart. What's the bigger addend here? Fifteen. Next, count on the amount of the second addend. We need to count on six more to find the answer, count with me! One, two, three, four, five, six! Finally, the number you land on, twenty-one, is the sum, or answer! "No! We're in the cage again! And it looks like we need to solve another equation before we can teleport again." Mr. Squeaks and Imani can use adding with a hundred square to get the portal open again! Their next equation is twenty-three plus seven. Remember to start by circling the bigger addend or number on the hundred square. Next, we can count on the amount of the second addend, so we need to count up seven more. Count with me! One, two, three, four, five, six, seven! Finally, the number that you land on is the sum, or answer. What is the sum here? The sum is thirty! So, twenty-three plus seven is thirty. "Please tell me we're back home...oh rats! One more time for good luck?" Mr. Squeaks and Imani are going to solve one more equation to try to get home. If their equation is thirty-one plus eight, what should they do first? First they should circle their bigger addend on the hundreds chart, thirty-one. Next, they need to count up eight, let's help them count! One, two, three, four, five, six, seven, eight! Finally, the number that they land on is the sum, or answer. What is the sum of thirty-one plus eight? Thirty-nine! Before we see if Mr. Squeaks and Imani have finally made it home, let's review. Today we learnt about adding using a hundred square. Remember, when adding using a hundred square, always start by circling the bigger addend, or number on the chart. Next, count on the amount of the second addend or number. Finally, the number that you land on is the sum, or answer. Now, let's see if they finally made it home. "I slept so well last night, what about you Imani? Wait a second, I'm in my bed? At home? Was it all just a dream?"
Adding Using a Hundred Square exercise
-
How do we use a 100 square to add?
HintsWhich number should we start counting from?
Addend is a special name for the numbers that you are adding together.
You will find the sum at the very end of an addition problem.
SolutionTo solve an addition problem using a 100 square, follow the steps below:
- Find the bigger number (or addend). For example, in the problem 12 + 4 = ?, 12 is the larger addend.
- Circle the bigger addend on the 100 square. For example, in the problem, 12 + 4 = ?, you would circle 12 on the number chart.
- Count on the amount of the smaller number (or addend). For example, in the problem, 12 + 4 = ?, begin at the number 12 that you have circled and then count on 4 more.
- The number that you land on is the sum, or answer. For example, in the problem, 12 + 4 = ?, you land on the number 16. So, 12 + 4 = 16.
-
Solve an addition problem using a 100 square.
HintsThe larger addend is 35. So, you should begin at the number 35 on the 100 square.
The smaller addend is 8. You need to count on 8 more from 35 to find the answer (or sum) on the 100 square.
Remember, you should read a 100 square like a book: from left to right!
SolutionHere are the steps for solving the equation, 35 + 8 = ?, with a 100 square:
- Begin at the larger addend, which is 35. Circle 35 on the 100 square.
- Count on the amount of the smaller addend. In this equation, the smaller addend is 8, so you should count on 8 spaces on the 100 square.
- The number that you land on, 43, is the sum. So, 35 + 8 = 43.
-
Can you answer the addition problems using a 100 square?
HintsTo solve an equation, first find and begin at the larger addend on the 100 square.
Count on the amount of the smaller addend to find the sum.
Remember, you read a 100 square like a book: from left to right!
SolutionTo solve an addition problem using a 100 square, follow the steps below:
- Find the larger addend.
- Circle the larger addend on the 100 square.
- Find the smaller addend.
- Count on the amount of the smaller addend.
- The number that you land on is the sum, or answer.
Correct answers
- 44 + 6 = 50
- 10 + 7 = 17
- 42 + 11 = 53
- 75 + 6 = 81
-
What is the answer of each addition problem?
HintsLook carefully, the larger addend is not always the first number in the equation.
Remember, to solve with the 100 square, begin at the larger addend and count on the amount of the smaller addend.
Solution72
- 12 + 60 = 72
- 50 + 22 = 72
- 69 + 21 = 90
- 2 + 88 = 90
- 36 + 9 = 45
- 20 + 25 = 45
-
Show how to add on a 100 square.
HintsThe addends are 50 and 6. The bigger number is already highlighted on the 100 square.
The smaller addend is 6. Count up from 50 to find the sum.
Remember, you read a 100 square like a book: from left to right!
SolutionTo solve the equation, 50 + 6 = ?:
- First, find the larger addend, which is 50. 50 is already highlighted.
- Next, find the smaller addend, which is 6.
- Count up until you reach the sum, 56.
- 50 + 6 = 56
-
Can you free Mr. Squeaks and Imani?
HintsUse the 100 square to help you solve each problem.
Look at the equation carefully to find the larger addend. It is not always the first number that you see.
Remember, begin at the larger addend on the 100 square and count on the smaller addend amount. The number you land on is the sum, or answer.
SolutionTo solve an addition problem using a 100 square, follow the steps below:
- Find the larger addend. This is not always the first number! For example, in the equation 3 + 70 = ?, 3 comes first, but 70 is greater than 3!
- Circle the larger addend on the 100 square.
- Find the smaller addend.
- Count on the amount of the smaller addend.
- The number that you land on is the sum, or answer.
Correct answers
- 3 + 70 = 73
- 28 + 7 = 35
- 61 + 7 = 68
- 40 + 12 = 52
