Round to the nearest 100.
f) 489 + 213 -> ____
g) 164 + 145 -> ____
h) 572 + 287 -> ____
i) 311 + 196 -> ____
j) 280 + 308 -> ____
Answer (2)
To solve these problems, we'll first add the numbers and then round the sums to the nearest hundred.
f) 489 + 213
Start by adding the numbers: 489 + 213 = 702
To round 702 to the nearest hundred, look at the tens digit, which is 0. Since 0 is less than 5, we round down. Thus, 702 rounds to 700.
Answer: 700
g) 164 + 145
Start by adding the numbers: 164 + 145 = 309
To round 309 to the nearest hundred, look at the tens digit, which is 0. Since 0 is less than 5, we round down. Thus, 309 rounds to 300.
Answer: 300
h) 572 + 287
Start by adding the numbers: 572 + 287 = 859
To round 859 to the nearest hundred, look at the tens digit, which is 5. Since 5 is equal to or greater than 5, we round up. Thus, 859 rounds to 900.
Answer: 900
i) 311 + 196
Start by adding the numbers: 311 + 196 = 507
To round 507 to the nearest hundred, look at the tens digit, which is 0. Since 0 is less than 5, we round down. Thus, 507 rounds to 500.
Answer: 500
j) 280 + 308
Start by adding the numbers: 280 + 308 = 588
To round 588 to the nearest hundred, look at the tens digit, which is 8. Since 8 is greater than or equal to 5, we round up. Thus, 588 rounds to 600.
Answer: 600
When rounding to the nearest hundred, remember to check the tens digit. If it's 5 or more, round up; if it's less than 5, round down.
To round numbers to the nearest hundred, you first add them together and then check the tens digit. Based on the digit, you either round up or down accordingly. For the given problems, the answers are 700, 300, 900, 500, and 600, respectively.
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