Fractions Page 4
3/4+5/7
(Add Fraction) Answer= 1 13/28 1. multiply bottom numbers, 4x7=28 2. multiply the top number by the opposite bottom number. 3x7=21, 4x5=20 3. add top number. 21/28+20/28, 21+20=41/28 4. Reduce fraction which since it's an improper fraction you would have to divide bottom by the top number 28 divided by 41=1 13/28
1/9 divided by 2/3
(Division Fraction) Answer=1/6 1. Same, Change, Flip 1/9x3x2 2. Multiply straight across.
3/7x14/15
(Multiplication problem) Answer=2/5 1. Reduce cross-ways. 1/1x2/5 2. Multiply straight across.1x2=2, 1x5=5; 2/5
3 1/2 - 2 7/8
(Subtract Fraction) Answer=5/8. 1. Can't do math with mixed numbers change to improper. 3x2+1=7/2 | 2x8+7=23/8 2. multiply bottom numbers, 2x8=16 3. multiply the top number by the opposite bottom number. 7x8=56, 23x2=46 4. Subtract top numbers, 56-46=10/46 5. Reduce problem divide both by 2, 10/16= 5/8
Reciprocal of .50 Reciprocal of 1/13
1. 2 .50=50, 1/2(F)2/1=2 2. 13 1/13(F)13/1=13
If a % number is in an AR problem, you should.
1. Always change it to a decimal. 2. Multiply it to solve the problem
Multiplying Fractions
1. Reduce cross-ways. 2. Multiply straight across top and bottom.
Convert 24% to a fraction. A. 6/25 B. 1/25 C. 6/24 D. 1/24
A. 6/25. Always divide number by 100. 24 Divided by 100.
Change a mixed number into a improper fraction. Change to improper fraction#: 5 3/4
Answer: 23/4 Multiply whole number with the bottom, then add the top number. -How to get that answer is to multiply 5x4 and add 3. Mixed numbers are the best answer on a test. But you cannot, do math problems with mixed numbers. You can do math problems with improper fractions.
Solve for top number, 15 divided by 3=5
Answer= 15 (3x5=15) -If you're trying to solve for the number 3 or 5 then divided the 15 into either number.
3 1/3 divided by 4 2/9
Answer=15/19
Solve for zx4=12
Answer=3 12 divide by 4=3 12/4=3
Solve for B, A divided by B=C
Answer=A divided by C=B A/C
Solve for A, A divided by B=C
Answer=BC(BxC)
One-fifth has the same value as? A. 5/10 B. 2/10 C. 5/1
B. 2/10 5/10=1/2 2/10=1/5 5/1=5
Change a % number to decimal?
Beyoncé Rule. Move decimal 2 spaces to the left. 9%= .09% 37%= .37% 6 1/2%= .065(The 1/2 is 5) 42 1/2%= .425
Solve for B, AB=C
C divided by A C/A
Solve for A, AB=C
C divided by B C/B
Which was created by squaring a number? A. 10 B. 18 C. 25
C. 25 square root 5.
What does Reduce Fractions mean? Reduce: 3/21. Reduce: 8/18.
Simplify to lowest terms. Think of a number that will divide into both Top & Bottom. 1. Answer: 1/7 (divide both by 3.) 2. Answer: 4/9(Both Even# can always divide by 2)
Change an improper fraction into a mixed number. Change to mixed#: 22/7.
Divide bottom into the top. Answer: 3 1/7. <-- Mixed# -Improper answer will be a fake answer.
What does Reciprocal mean? 1. Reciprocal of: 3/13? 2. Reciprocal of: 5 2/3? 3. Reciprocal of: .25? 4. Reciprocal of any whole number is? EX: 13
Flip the fraction. Answers: 1. 4 1/3. 2. 3/17. 3. 4. Think of a Quarter,1/4(F)4/1=4 4. 1/13.
Add & Subtract Fractions
Multiply the denominators, change top numbers, add & subtract the top numbers. 1. Same Denominator. 2. Change top numbers. 3. Add or Subtract the top numbers. 4. Simplify the fraction. Pg. 4, Number 9
Multiplication X
Per of For each
Divide Fractions
Same, Change, Flip. 1. First fraction keep the same. 2. The divide sign change to multiplication sign. 3. Flip the second fraction.
Any number can be divided by 5 if? A. It is an odd number. B. The last digit is 0 or 5. C. The sum of the digits is 5.
The last digit is 0 or 5.