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AnnyKZ [126]
2 years ago
12

PLEASE HELP!!! I WILL GIVE BRAINLIEST!!! Explain how to use estimation to help find the product of two decimals. Give an example

with both estimated and actual answers.
Mathematics
2 answers:
san4es73 [151]2 years ago
6 0
You can use estimation to find the product of two decimals by rounding both the decimal’s so the nearest tenth or tens place (depending on how long it is) and then multiplying the decimals.

for example, if you had 4.6 and 8.9, you have to round the 4.6 and 8.9. you round the 4.6 up to 5 because the 6 bumps the 4 up to 5) and then round 8.9 to 9 (because the 9 bumps the 8 up to 8.) then, multiply 5 and 9 and you get 45!
Nastasia [14]2 years ago
4 0
Here’s an example , say you were given 8.45 , & 4.55 , first you’d round them both up (since the decimal place is above 5) , meaning 8.45 would go to 8.5 & 4.55 would go to 4.6, so if you’re adding it & you’re trying to find estimated , estimated would be 13.1 , the actual answer would be 13
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I NEED THESE DONE OR I WONT GET A GOOD GRADE!!!!!
djverab [1.8K]

Answer:

14.x=-2

21. x=-2

23. x=5

7.x=12

2.x=49

Step-by-step explanation:

I got your back bro:

14. Subtract 7 on both sides. Then divide -16 by 8.      x=-2

21. Add 1 on both sides. Divide 18 by -9. x=-2

23. Subtract 24 on both sides, then divide -25 by -5. your answer is x=5.

7. Add 2/5 on both sides. then multiply 2 2/5 by the reciprocal of -1/5. Your answer is x=12

2. Subtract 5 on both sides. Multiply 14 by the reciprocal of 2/7, or 7/2. Your answer is 49.

Good luck!


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