To Round or Not to Round?
Hundreds
Thousands
Ten Thousands
Word Problems
100
You're buying candy for your classroom Halloween party. Can you round, or do you need the exact amount?
You can round.
100
610
600
100
8,327
8,000
100
71,000
70,000
100
Drogo wants to buy a double cheeseburger at McDonald's. He has four quarters, two dimes, and three pennies. Round the total money Drogo has to buy lunch with to the nearest tens place.
Drogo has $1.20 (When rounding to the tens, I have to looks at the ones, or in this case, pennies. He only has three pennies.)
200
When you are buying the candy for the Halloween party, do you round the number of students up or round down to the nearest ten?
Trick Question! You round up because in this situation, you want to have enough candy for each person to get one piece.
200
31,251
31,300
200
7,822
8,000
200
84,000
80,000
200
If one episode of Pokemon last twenty-seven minutes, how many episodes can I watch in one and one-half hours?
I can watch three episodes. I round twenty-seven to the nearest ten, which is thirty minutes, or one half hour. So in one and one-half hours, I can watch three episodes.
300
You're going to the movies. Tickets cost $8.95. Drinks cost $4.20, and popcorn is $6.47. Do you need to know exactly how much money to bring, or can you round and estimate?
You can round.
300
890
900
300
4,569
5,000
300
67,345
70,000
300
It takes me about two minutes to brush my teeth, three minutes and forty-five seconds to get dressed, eight minutes to put on my makeup, and three more minutes to style my hair. About how much time do I need to get ready for school each day? Round to the nearest ten minute increment.
2+3+.75 (45 seconds)+8+3=16.75, or sixteen minutes, forty-five seconds. 16 rounds up to 20. I need about 20 minutes to get ready for school each day.
400
It takes twenty-seven minutes to build a house and kill two zombies on Minecraft. It takes another six minutes to build a pen to put your pigs in. You want to know how much more time you need to finish gaming today.
You can round up.
400
80
100
400
2,100
2,000
400
63,999
60,000
400
If a serving size of sour patch kids is three gummies, and I have five servings plus two more individual gummies I found in my pocket, round the total number of sour patch kids I have to the nearest tens place.
I have 3x5, so 15 sour patch kids. 15 + 2 is 17. 17 rounds up to twenty. I have about twenty sour patch kids.
500
It takes 2/3 cup vegetable oil to bake a cake, two eggs, and 1/3 cup.
This needs to be exact.
500
1,212
1,200
500
97,400
97,000
500
seventy-six thousand, four hundred twenty-six
eighty thousand
500
I can divide an apple into ten slices. I have eleven apples. Round my total number of apple slices to the nearest hundred. Do I have enough slices to give at least one to each fourth grader?
10x11=110 Look at the tens place. 1 rounds down. I have about 100 apple slices. There are about 60 fourth graders, so yes I have enough slices to give one to each fourth grader.
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