Quick Math Flashcards by Aditi Paul | Brainscape

Q

1^2

A

1

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Q

√4

A

2

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Q

0^2

A

0

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Q

3^4

A

81

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Q

2^9

A

512

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Q

17^2

A

289

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Q

2^3

A

8

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Q

2^4

A

16

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Q

2^5

A

32

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Q

2^6

A

64

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Q

2^8

A

256

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Q

22^2

A

484

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Q

6^3

A

216

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Q

18^2

A

324

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Q

21^2

A

441

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Q

15^2

A

225

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Q

16^2

A

256

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Q

25^2

A

625

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Q

2.25^2

A

5

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Q

1.7^2

A

3

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Q

1.4^2

A

2

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Q

2^10

A

1024

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Q

9^3

A

729

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Q

8^3

A

512

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Q

7^3

A

343

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Q

14^2

A

196

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Q

2^7

A

128

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Q

2^-1

A

0.5

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Q

19^2

A

361

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Q

1/2^2

A

1/4 = 0.25

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Q

2^-3

A

1/2^3=1/8=0.125

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Q

10^3

A

1000

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Q

5^3

A

125

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Q

4^5

A

2^10=1024

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Q

4^4

A

256

Q

20^2

A

400

Q

30^2

A

900

Q

1/10

A

0.1=10%

Q

1/25

A

.04=4%

Q

4/3

A

1.333…=133%

Q

3/3

A

1=100%

Q

2/3

A

.6666…=66.66%

Q

1/6

A

0.167=16.67%=16 2/3%

Q

1/9

A

0.1111=11.1%

Q

1/3

A

0.333…=33.33%

Q

3/10

A

0.3=30%

Q

2/10=1/5

A

0.2=20%

Q

1/50

A

0.02=2%

Q

2/8=1/4

A

0.25=25%

Q

1/8

A

0.125=12.5%

Q

12/10=6/5

A

1.2=120%

Q

11/10

A

1.1=110%

Q

3/8

A

0.375=37.5%

Q

4/10=2/5

A

0.4=40%

Q

6/10=3/5

A

0.6=60%

Q

5/10=1/2

A

0.5=50%

Q

7/10

A

0.7=70%

Q

5/8

A

.625=62.5%

Q

4/8=1/2

A

0.5=50%

Q

8/10=4/5

A

0.8=80%

Q

9/10

A

0.9=90%

Q

10/10=5/5=1

A

1.0=100%

Q

6/8=3/4

A

0.75=75%

Q

7/8

A

0.875=87.5%

Q

8/8=4/4=1

A

1.0=100%

Q

10/8=5/4

A

1.25=125%

Q

12/8=6/4=3/2

A

1.5=150%

Q

1/20

A

0.05=5%

Q

1/100

A

0.01=1%

Q

5/6

A

0.833=83.3%

Q

New percent formula

A

New Percent (as % of original)

= New Value/Original value

Q

(x+y)^2

A

X^2 + 2xy + y^2

Q

(x-y)^2

A

X^2 - 2xy + y^2

Q

(x+y) (x-y)

A

X^2 – y^2

Q

For any x,

A

Sq rt x^2 = I x I

Q

If x = x^2

A

If x = x^2, then x=0 or 1

Q

% increase of 50%

A

= New percent of 150%

= Multiply original value by 1.5 or 3/2

Q

% decrease of 10%

A

= New percent of 90%

= multiply original value by 0.9

Q

% increase of 100%

A

=New percent of 200%

= multiply original value by 2

Q

% decrease of 20%

A

= New percent of 80%

= multiply original value by 0.8 or 4/5

Q

% decrease of 75%

A

= New percent of 25%

= multiply original value by 0.75 or ¼

Q

% increase of 20%

A

=New percent of 120%

= multiply original value by 1.2 or 6/5

Q

% increase of 25%

A

=New percent of 125%

= multiply original value by 1.25 or 5/4

Q

% decrease of 25%

A

= New percent of 75%

= multiply original value by 0.75 or ¾

Q

Pythagorean Triples

A

3-4-5 Triangle (and its multiples)

5-12-13 Triangle