12. Memorization Flashcards
What is 11^2?
11*11 = 121
What is 12^2?
12*12 = 144
What is 13^2?
13*13 = 169
What is 14^2?
14*14 = 196
What is 15^2?
15*15 = 225
What is 16^2?
16*16 = 256
What is 17^2?
17*17 = 289
What is 18^2?
18*18 = 324
What is 19^2?
19*19 = 361
What is 20^2?
20*20 = 400
What is 25^2?
25*25 = 625
What is 30^2?
30*30 = 900
What is Sqrt(121)?
11*11 = 121
What is Sqrt(144)?
12*12 = 144
What is Sqrt(169)?
13*13 = 169
What is Sqrt(196)?
14*14 = 196
What is Sqrt(225)?
15*15 = 225
What is Sqrt(256)?
16*16 = 256
What is Sqrt(289)?
17*17 = 289
What is Sqrt(324)?
18*18 = 324
What is Sqrt(361)?
19*19 = 361
What is Sqrt(400)?
20*20 = 400
What is Sqrt(625)?
25*25 = 625
What is Sqrt(900)?
30*30 = 900
What is 2^3?
2^3 = 8
What is 3^3?
3^3 = 27
What is 4^3?
4^3 = 64
What is 5^3?
5^3 = 125
What is 10^3?
10^3 = 1,000
What is Cbrt(8)?
2^3 = 8
What is Cbrt(27)?
3^3 = 27
What is Cbrt(64)?
4^3 = 64
What is Cbrt(125)?
5^3 = 125
What is Cbrt(1,000)?
10^3 = 1,000
What is 2^2?
2^2 = 4
What is 2^3?
2^3 = 8
What is 2^4?
2^4 = 16
What is 2^5?
2^5 = 32
What is 2^6?
2^6 = 64
What is 2^7?
2^7 = 128
What is 2^8?
2^8 = 256
What is 2^9?
2^9 = 512
What is 2^10?
2^10 = 1,024
What is 3^2?
3^2 = 9
What is 3^3?
3^3 = 27
What is 3^4?
3^4 = 81
What is Sqrt(9)?
3^2 = 9
What is Cbrt(27)?
3^3 = 27
What is 81^(1/4)?
3^4 = 81
What is 4^3?
4^3 = 64
What is 5^3?
5^3 =125
What is 9*6?
54
What is 9*7?
63
What is 9*8?
72
What is 8*7?
56
What is a^0?
1 for any non-zero value of a
What is 0^a?
0
What is 1^a?
1
What is a^1?
a
What are the most common Perfect Squares?
2*2 = 4 3*3 = 9 4*4 = 16 5*5 = 25 6*6 = 36 7*7 = 49 8*8 = 64 9*9 = 81 11*11 = 121 12*12 = 144 13*13 = 169 14*14 = 196 15*15 = 225 16*16 = 256 17*17 = 289 18*18 = 324 19*19 = 361 20*20 = 400 25*25 = 625
What is the decimal equivalent of 1/8?
0.125
What is 24 x 26?
624 = 25^2 – 1
Trick: x^2-1=(x-1)(x+1)
x^2-4=(x-2)(x+2), etc.
x^2-9=(x-3)*(x+3)
What is Sqrt(2)?
1.4
Remembering that 2/14 is Valentine’s Day might help
What is Sqrt(3)?
1.7
Remembering that 3/17 is St. Patrick’s Day might help
What is Sqrt(5)?
~2.25
How many primes are there between 0 and 50?
15 Primes between 0 and 50
What are the Prime Numbers between 0 and 10?
Four primes
2, 3, 5, 7
What are the prime numbers between 11 and 20?
Four primes
11, 13, 17, 19
What are the primes between 21 and 30?
Two primes
23, 29
What are the primes between 31 and 40?
Two primes
31, 37
What are the primes between 41 and 50?
Three primes
41, 43, 47
What are the factored and distributed forms of the three special products?
Square of a Sum
(x + y) = x^2 + 2xy + y2
Square of a Difference
(x – y)^2 = x^2 – 2xy + y^2
Difference of Squares
(x + y)(x – y) = x^2 – y^2
What is 3!?
3 * 2 * 1 = 6
What is 4!?
4 * 3 * 2 * 1 = 24
What is 5!?
5 * 4 * 3 * 2 * 1 = 120
What is 6!?
6 * 5 * 4 * 3 * 2 * 1 = 720
What are the primes between 51 and 100?
Ten primes
53, 59 61, 67 71, 73, 79 83, 89 97
What are the Pythagorean triplets?
3-4-5 5-12-13 7-24-25 8-15-17 9-40-41
NOTE: You can double, triple, or otherwise apply a common multiplier to these lengths (e.g. 6-8-10)
