Hey there! Today, we’re going to learn a fun way to round numbers to the nearest hundred. It’s like a little math game! Let’s get started.
Rounding is a way to make numbers simpler but still close to the original number. We do this by looking at certain digits in the number to decide if we should round up or down.
When you want to round a number to the nearest hundred, you need to look at the tens place. Here’s a simple trick:
After rounding, the tens and ones places become zeros.
Imagine a park ranger counting visitors at national landmarks. Let’s help them round the numbers!
There were 175 visitors. Look at the tens place: it’s a 7. Since 7 is more than 5, we round up from 100 to 200.
There were 871 visitors. The tens place is a 7, so we round up from 800 to 900.
There were 960 visitors. The tens place is a 6, so we round up from 900 to 1000.
Let’s try rounding some more numbers:
There were 936 visitors. The tens place is a 3, so we round down from 936 to 900.
There were 249 visitors. The tens place is a 4, so we round down from 249 to 200.
There were 817 visitors. The tens place is a 1, so we round down from 817 to 800.
We can also round numbers to the nearest ten by looking at the ones place:
For example, if you have 37, look at the ones place: it’s a 7, so we round up to 40.
Some kids ate 443 pieces of fruit. The tens place is a 4, so we round down to 400.
They also ate 29 vegetables. The ones place is a 9, so we round up to 30.
Here’s a challenge for you: If a kid eats 154 grams of protein, what do you round it to? (Hint: Look at the tens place!)
And if they eat 81 grams of grains, what do you round it to?
Remember, always look at the place to the right of the place you want to round to. Round up if you see a 5 or higher, and round down if you see a 4 or lower.
Thanks for learning with us! Keep practicing, and you’ll be a rounding expert in no time!
Rounding Treasure Hunt: Go on a treasure hunt around your house or classroom to find numbers that you can round to the nearest hundred. Look at items like books, toys, or even food packages. Write down the numbers you find and practice rounding them. For example, if you find a book with 342 pages, round it to the nearest hundred. Share your findings with a friend or family member!
Rounding Relay Race: Gather a group of friends or classmates and organize a rounding relay race. Write different numbers on pieces of paper and place them at one end of the room. Each child takes turns running to pick a number, rounding it to the nearest hundred, and then running back to tag the next person. The team that rounds all their numbers correctly first wins!
Observation Journal: Keep a journal for a week where you note down numbers you encounter in everyday life, such as the number of steps you take, the number of pages you read, or the number of cars you see. Each day, choose one number and round it to the nearest hundred. Reflect on how rounding helps simplify numbers and makes them easier to work with.
Sure! Here’s a sanitized version of the transcript, removing any unnecessary repetitions and maintaining clarity:
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To round a number to the nearest hundred, you need to look at the tens place to decide whether to round up or down. I like to underline the place I’m rounding to (the hundreds place) and draw an arrow to the tens place, which will indicate how to round.
You always look one place to the right of the place you want to round to. In this case, since we’re rounding to the nearest hundred, we look at the tens place. The same rule applies when rounding to the hundreds place as it does for rounding to the tens place. The key number is five: if it’s five or higher, you round up; if it’s four or lower, you round down.
When rounding to the hundreds place, the numbers in the tens and ones places become zeros.
Let’s look at a real-life situation that requires rounding. A park ranger wants to record how many people visited national landmarks by rounding to the nearest hundred.
First, we’ll check Mount Rushmore, which had 175 visitors. To round this number, we underline the hundreds place and look at the tens place. Since there is a 7 in the tens place, we round up the one in the hundreds place from 100 to 200.
Now, let’s round the next two landmarks’ visitors to the nearest hundred.
Old Faithful had 871 visitors. Again, we underline the hundreds place and look at the tens place. The 7 in the tens place tells us to round up, so we round 800 to 900.
The Grand Canyon had 960 visitors. We underline the hundreds place and look at the tens place. The 6 in the tens place tells us to round up, so we round 900 to 1000.
Remember to look at the place to the right of the place you want to round to and round up if you see a 5 or higher.
Next, let’s round the Washington Monument, which had 936 visitors. We underline the hundreds place and look at the tens place. The 3 in the tens place tells us to round down, so we round 936 to 900.
The Jefferson Memorial had 249 visitors. We underline the hundreds place and look at the tens place. The 4 in the tens place tells us to round down, so we round 249 to 200.
The Lincoln Memorial had 817 visitors. We underline the hundreds place and look at the tens place. The 1 in the tens place tells us to round down, so we round 817 to 800.
When rounding to the nearest ten or hundred, always look at the place to the right to decide whether to round up or down.
For example, rounding 137 to the nearest hundred involves looking at the tens place. The 3 tells us to round down to 100. However, rounding 37 to the nearest ten involves looking at the ones place. The 7 tells us to round up to 40.
Now, let’s help some kids figure out how many fruits and vegetables they ate this week. They ate 443 pieces of fruit. Rounding this to the nearest hundred, we see a 4 in the tens place, so we round down to 400.
For vegetables, they ate 29. Rounding this to the nearest ten, we see a 9 in the ones place, so we round up to 30.
I’ll leave you with a challenge: help the kids round the next two types of food they eat to the nearest hundred and ten.
For example, if a kid eats 154 grams of protein, we round up to 200 because of the 5 in the tens place. If they eat 81 grams of grains, we round down to 80 because of the 1 in the ones place.
Remember to look at the place to the right of the place you want to round to: round up if you see a 5 or higher, and round down if you see a 4 or lower.
Thanks for watching! We’ll see you next time. Subscribe to our channel to stay updated on new videos.
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This version maintains the educational content while removing redundancies and ensuring clarity.
