Answer
I assume you're talking about 6-7, so on the left lines, you already did it, you just regularly subtract the numbers, and then on the right lines, you round the first problem to the nearest ten, remember five and up, round up, so for question 6 the new number model would be 90-40=50. since 93 rounds down to 90 and 38 rounds up to 40. continue to do that and write the entire model AND answer on the line to the right. hope this helps
Step-by-step explanation:
17.45 +2.00= 19.45 cost without coupon
19.45-5.95=13.50 subtract for snacks
13.50/2= $6.75 divide by 2
$6.75 for each
Answer: 3/5= 0.6
Step-by-step explanation:
Answer:
It will take Chris 13 weeks of allowance to save enough to buy the computer.
Step-by-step explanation:
Chris needs $858 to buy a computer.
She has already saved $575.
She gets $15 an hour for babysitting and will babysit 12 hours in the next month, then she will get for babysitting:
($15/hour)(12 hours)=$180
Then, Chris will need:
A=$858-$575-$180→A=$103
She can save &8 a week form her allowance, then she will need:
Number of weeks: n = $103 / ($8/week) → n=12.875 weeks
Rounding:
n=13 weeks
That's a question about percentage.
Let's imagine that we want to know how much is 90% of 200. To do this calculation, we should multiply 200 by 90 and then divide the result by 100. We do that because 90% is the same thing that
. So, 90% of 200 is equal to:
![\frac{200\cdot90}{100} =\\\\\frac{18000}{100} =\\\\180](https://tex.z-dn.net/?f=%5Cfrac%7B200%5Ccdot90%7D%7B100%7D%20%3D%5C%5C%5C%5C%5Cfrac%7B18000%7D%7B100%7D%20%3D%5C%5C%5C%5C180)
Now, imagine that you would like to know how much is 100% of 999. First, we multiply 999 by 100 and divide the result by 999. So, 100% of a number is equal to itself. That's a very important information, because it's possible to understand this:
- If the percentage is less than 100%, the result is less than original number.
- If the percentage is equal to 100%, the result is equal to the original number.
- If the percentage is greater than 100%, the result is greater than original number.
Now, we can solve our problem! \o/
The options that the percentage is less than 100% are: 35% of 300, 62% of 182 and 89% of 525. Therefore, their answers will be less than the original number.
And, the option that the percentage is greater than 100% are: 250% of 18, 300% of 250 and 120% of 72. So, their answers will be greater than the original number.
On the image, you can see the answer in a table.
I hope I've helped. ^^
Enjoy your studies! \o/