Error Analysis
9 - 3 x 2=12
Correct answer is 3. Do x then -, not - then x.
4² - 1² =
15
The result when we add numbers.
sum
7 + (2 x 4) - 1
14
Translate this to math: Two times a number n.
2n
5^ 2 + 1=11
5 ^2 = 25, not 10. Correct Answer is 26.
(11 – 6) + 2²
9
The result when we subtract numbers.
Difference
49 ÷ (3+4) + 52
59
Translate this to math: One more than three times a number n
3n + 1
3^2 - 6 = 0
3^ 2 = 9, not 6. Correct answer is 3
(9 x 2 – 8) + 10
20
The result when we multiply numbers.
Product
5 + 14 ÷ 2 × 5
40
Translate this to math: Two less than five times a number n.
5n - 2
4 + 5 + 7 - 3 x 2 = 26
You need to follow PEMDAS and do x first. Correct answer is 1
(6 + 30 x 2 – 1) - 8² =
1
The result when we divide numbers.
Quotient
20 – (5+3) x 2 + 4
8
Translate this to math: 4 times the sum of a number n and 10.
4(n + 10)
10^ 3 = 30
10^ 3 = 10 x 10 x 10, which is 1000, not 30.
12 + 6² ÷ (1 + 4 x 2) - 3 x 2² =
4
What does evaluate mean?
To solve the problem!!
(5 x 4) – 6 ÷ 2 + 9
26
Translate this to math: The quotient when 6 times a number n is divided by 12
6n / 12