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How can 9 times 4 help you find 9 times 8-?
Since 8 is 2 x 4, 9 x 8 is 2 x 9 x 4
What is the LCM of 8 and 9 using prime factorization?
2 x 2 x 2 = 8 3 x 3 = 9 2 x 2 x 2 x 3 x 3 = 72, the LCM
How can you make 24 using numbers 9 4 8 2?
√9 x 2 x (8 - 4) = 3 x 2 x 4 = 24
If the sum of a number and its square is 72 then what is the number?
x+x^2=72x^2 +x -72=0 (x+9)(x-8)=0 x=-9 or x=8
Write a math trick?
1 Through 9 to 9 Through 1:1 x 8 + 1 = 912 x 8 + 2 = 98123 x 8 + 3 = 9871234 x 8 + 4 = 987612345 x 8 + 5 = 98765123456 x 8 + 6 = 9876541234567 x 8 + 7 = 987654312345678 x 8 + 8 = 98765432123456789 x 8 + 9 = 987654321Sequential Input to All 1's:1 x 9 + 2 = 1112 x 9 + 3 = 111123 x 9 + 4 = 11111234 x 9 + 5 = 1111112345 x 9 + 6 = 111111123456 x 9 + 7 = 11111111234567 x 9 + 8 = 1111111112345678 x 9 + 9 = 111111111123456789 x 9 + 10 = 1111111111All 1's to a Numeric Palindrome:1 x 1 = 111 x 11 = 121111 x 111 = 123211111 x 1111 = 123432111111 x 11111 = 123454321111111 x 111111 = 123456543211111111 x 1111111 = 123456765432111111111 x 11111111 = 123456787654321111111111 x 111111111 = 12345678987654321
