Order of Operations
4 + 5 x 2
14
5 - 32
-4
-6 + -2 - (5-7)
-6
What is the divisibility rule for 3?
The sum of the digits is a multiple of 3.
4 x 5 - 3 x 4
8
4 - 6 - 32
-11
-5 - (-3)2 - (3-9)
-8
Why is the square root of 16 a rational number but the square root of 20 is irrational?
The square root of 16 is 4 (which is rational). The square root of 20 is a decimal that is non terminating and doesn't repeat.
33 + (8-3)2
52
(4 - 7)2 - 4 x 3
-3
-1 - 23 - (4-7)2
-18
What is 6 1/2 - 8 3/4? (write as an improper fraction)
-9/4
(32 - 5)2 - 5
11
40 - 72 - (4 - - 2)
-15
-62 - 52
-61
What is 6/7 ÷ 42/35?
5/7