Explain how to make these couculations mentaly a. 99+54 b.244-99
1 answer:
<h2><u>
PLEASE MARK BRAINLIEST!</u></h2>
<u></u>
Answer:
Use estimation
Step-by-step explanation:
A) 99 + 54
estimate that 99 is 100
estimate that 54 is 55
Add 100 and 55 together
100 + 55 = 155
Remember that you added 1 to 99 and 1 to 55
So you must subtract 2 from 155
155 - 2 = 153
Your answer is 153.
B) 244 - 99
estimate that 244 is 245
estimate that 99 is 100
Add 245 and 100 together
245 + 100 = 345
Remember that you added 1 to 245 and 1 to 99
So you must subtract 2 from 345
345 - 2 = 343
Your answer is 343.
<em>Remember that you are doing all of this in your head!</em>
<em />
I hope this helps!
- sincerelynini
You might be interested in
The answer to your question is A
Answer:
The answer to that is 9.75
Step-by-step explanation:
Hope this helps! Good luck
Answer:
y is less than -2x+3
Step-by-step explanation:
Area and perimeter are in the ratio of 1:3. but if u mean to ask about the ratio of perimeters & areas of both triangles. the answer would be 1:1
APR is different than other compounding periods because you would need to find some equivelancy to compare things at.
