Simplify 1
9 - 3 x 2 = 12
Do x before -, so the correct answer is 3
Give the correct order of operations
PEMDAS (parenthesis, exponents, multiplication, division, addition, subtraction)
2.3 + 9.4 + 3.1
26.5
Simplify the expression.
(13 x 4) + (17 - 3)
66
49 + (3 x 4)
61
2(17 - 2 + 7) = 16
Must read operations in parenthesis like a book, so - before +. The correct answer is 44
The mnemonic or saying we came up with to remember the order of operations
Please Excuse My Dear Aunt Sally
31 - 28.04 + 4.00
6.96
What is the value of this expression?
48.13 - 29.02 + 3.1
22.21
16(2.1 + 3) = 38.4
Must add decimal to the back of the 3 (3.0) before adding. The correct answer is 81.6
The different ways division can be represented in an expression
/ and line with two dots
(36 / 6) + (12 x 7)
90
Donovan was looking at this expression:
[(25 / 5) + 3] - 2
His first step was: 25 / 5 = 5.
What should his next step be?
5 + 3 = 8
(5.2 x 3) - 5 + 2
12.6
81 / 3 + 7 - 3 x 2 = 62
Must follow PEMDAS and do all multiplication and division before moving on to addition and subtraction. Correct answer is 28
The different ways multiplication can be represented in an expression
x, dot in middle of numbers, #(#), #[#]
2[3 x 4 - 4 / 2]
20
Jett was solving the expression 3[(14.1 x 3) + 7]. His steps were as follows:
Step 1: 14.1 x 3 = 42.3
Step 2: 42.3 + 7 = 43.0
Step 3: 3 x 43.0 = 129.0
What did he do wrong in Step 2?
He didn't line up the decimals when adding. It should have been 42.3 + 7 = 49.3 because 7 can be written as 7.0
50.00 - [2 + (8.09 X 4)]
15.64
24.32[9 - 2.4 x 3] = 26.12
The correct answer is 43.776
What simplifying an expression gives us (hint: it's not the word "answer")
value
14.1[2.6 + 0.3(17 - 2)]
100.11
What's the third step in simplifying the expression below?
23 + 2[(3.27 x 5) - (2 x 8.07)] - 2
16.35 - 16.04 = 0.31