Answer to questions of percentage, discount and primer facto
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Exercises
1. Solve the following problems with integers
a. 31+(-18)
b. (-8)+14+5
c. 7Ã-(-13)
d. (-125)÷(-5)
2. Solve the following problems with fractions:
a. 3/7 + 2/7
b. 5/8 - 1/4
c. 4/9 + 1/11
c. 1+ 4/7- 3/4
3. Solve the following problems with decimals
a. 3.11-4.5
b. 5.27*(-5.81)
c. 11.3/2.2
4. Write the answers in 3 as percentages.
5. What is 15% of 35?
6. Solve the following problem keeping in mind the correct order of operations:
(1+4)*(5+1.1)/3+1
7. What are the prime factors of number 50? What about 51?
8. You buy $128.95 worth of merchandise. How much is taken off the normal price when it is sold at a 10% discount? How much do you end up paying with this 10% discount?
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Solution Summary
The solution provides detailed explanation how to solve questions related to percentage, discount and primer factor.
Solution Preview
Q1
a. 31+(-18)=13
b. (-8)+14+5=19-8=11
c. 7Ã-(-13)=-91
d. (-125)÷(-5) =25.
Q2:
a. 3/7 + 2/7=5/7
b. 5/8 - 1/4=5/8-2/8=3/8
c. 4/9 + 1/11=44/99+9/99=53/99
c. 1+ 4/7- 3/4 ...
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