Numbers to 100: Review & Number Bonds

Free sample questions, a clear explanation, and 5 practice skills with an AI tutor that guides without giving the answer away.

Welcome to the Super Number Toy Store!

Hey Math Explorer! Imagine you're the manager of the coolest toy store ever. You have TONS of toys, like 67 bouncy balls and 82 colorful crayons. Wow! How can we keep track of them all without getting mixed up? It's all about thinking in groups of ten!

This is just like how we work with numbers. Big numbers might seem tricky, but they are just made of groups of tens and some extra ones. Let's get our store organized!

Building Numbers with Tens and Ones

Let's say we need to count 34 teddy bears. Instead of counting them one-by-one (which takes forever!), we can be smart organizers. We can pack them into boxes that hold 10 bears each.

We would fill 3 full boxes. That's 3 groups of ten, or 30 bears!
We would have 4 extra bears left over that don't fill a whole box.

So, the number 34 has a 3 in the tens place (for our 3 boxes) and a 4 in the ones place (for our 4 extra bears). See? You just used place value!

Key Takeaway: Number Bonds!

A number bond helps us see the "parts" of a number. We can "break apart" 34 into its tens and ones. The number 34 is made of two parts: 30 and 4. This helps us see the value of each digit super clearly!

Comparing Toys: Who Has More?

Now, let's compare. The superhero aisle has 52 action figures, and the puzzle aisle has 25 puzzles. To find out which has more, we just look at the tens place first.

The number 52 has 5 tens. The number 25 has only 2 tens. Since 5 is bigger than 2, we know that 52 is greater than 25. There are more action figures than puzzles! Easy peasy!

Great job organizing our store today! Understanding tens and ones helps you count, compare, and understand every number up to 100. You're a place value pro!

Sample questions

1. Imagine you have 3 groups of ten blocks and 5 single blocks. What number do these blocks show?

✓ 35

○ 53

○ 305

○ 8

Answer: 35 — Count the groups of ten first, then the single ones.

2. I have 6 tens and 2 ones. What number am I?

○ 26

✓ 62

○ 602

○ 8

Answer: 62 — The tens digit comes first, then the ones digit.

3. The number 47 can be broken down into how many tens and how many ones?

○ 7 tens and 4 ones

○ 40 tens and 7 ones

✓ 4 tens and 7 ones

○ 11 tens and 0 ones

Answer: 4 tens and 7 ones — Look at the digit in the tens place and the digit in the ones place.

Skills in this topic

Count and write numbers to 100 using concrete manipulatives.
Identify place value of tens and ones in numbers to 100.
Decompose numbers within 100 using number bonds (e.g., 67 = 60 + 7).
Compare and order numbers to 100 using place value.
Explain how understanding place value helps organize items in a store with up to 100 products.

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