What Does "Estimate to the Nearest Ten" Mean?
Estimating to the nearest ten means finding which group of ten a number is closest to.
It's like asking: Is this number closer to 10, 20, 30, or another ten? We use this skill to make numbers simpler and easier to work with!
How to Estimate to the Nearest Ten
1️⃣ Look at the number's ones digit (the digit on the right)
2️⃣ If it's 5 or more, round up to the next ten
3️⃣ If it's 4 or less, round down to the current ten
Let's Practice Together!
Example 1: Rounding 37
Look at the number 37:
30
31
32
33
34
35
36
37
38
39
40
The ones digit is 7 (which is more than 5), so we round up to 40!
Example 2: Rounding 52
Let's try 52:
50
51
52
53
54
55
56
57
58
59
60
The ones digit is 2 (which is less than 5), so we round down to 50!
Parent Tips 🌟
- Play "Guess the Ten": While driving, ask your child to guess how many cars would make about 10, 20, or 30 in a parking lot.
- Use household items: Count small objects like buttons or coins, then practice rounding the total to the nearest ten.
- Make it a game: Write numbers on cards and have your child sort them into "round up" and "round down" piles based on the ones digit.