Use rounding or compatible numbers to estimate 222 plus 203

1 answer:

6 0

200 can be rounded down to 200, which is easy to add with. Thus, an estimate is 222+200=422.

Alternatively, you could round 222 up a bit, to get 225+200=425. This is actually the correct answer, but this rounding doesn't make the calculation easier, so if you needed a quick estimate I'd go with the first option.

You might be interested in

Isabel is making lemonade for a party with 12 guests. She wants to make equal servings that are at least 2 cups each. She makes

JulsSmile [24]

1 quart = 4 cups
7 quarts = 28 cups

1 guest needs 2 cups
12 guests need 24 cups

She has 28 and needs 24, yes there is enough

7 0

3 years ago

Read 2 more answers

For every 7 glasses wearers in a Classroom,there are about 13 non glasses wearers.If there are 32 students in a entire class how

Alla [95]

Answer:

21 With glasses

Step-by-step explanation:

32/20=1.6

1.6•7=11.2 Without Glasses

1.6•13=20.8 With Glasses

20.8 rounded to nearest whole number=21

6 0

2 years ago

Ratios that are equivalent to 9:6.

Bezzdna [24]

Answer:

3:2

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Point e is located at -5,2 point m is the reflection of point e what is the distance between e and m

nataly862011 [7]

Answer:

the distance is 10

Step-by-step explanation:

-5,2 to 0,0 is 5

and the refection of -5,2 is 5,2

5,2 to 0,0. is also 5

5+5=10

4 0

3 years ago

The time that a randomly selected individual waits for an elevator in an office building has a uniform distribution over the int

rewona [7]

Answer:

The mean of the sampling distribution of x is 0.5 and the standard deviation is 0.083.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .