7th Number Sense
Round 4.376 to the nearest tenth.
4.4
-9 + 4 = ?
-5
sqrt(144) = ?
12
Combine like terms: 4x + 3 + 2x
6x + 3
Solve: x + 5 < 2
x < -3
What is the prime factorization of 60?
2^2 x 3 x 5
-7 x 8 = ?
-56
Simplify x^5 times x^3.
x^8
12 - 3 x 2 + 5 = ?
11
Solve: -4x >= 20
x <= -5 (flip the sign!)
Simplify 24/36.
2/3
3/4 - 1/6 = ?
7/12
sqrt(50) is between which two whole numbers?
7 and 8
Solve: x/3 = -6
x = -18
If f(x) = 3x - 2, find f(4).
10
Write 5/8 as a decimal.
0.625
2/5 divided by 4/15 = ?
1 1/2 (or 3/2)
Write 0.00062 in scientific notation.
6.2 x 10^-4
Solve: 4x + 9 = -11
x = -5
Solve: 3 < 2x + 1 < 9
1 < x < 4
Write 0.35 as a fraction in simplest form.
7/20
Write 2^-3 as a fraction.
1/8
(3 x 10^4)(2 x 10^3) = ? (answer in scientific notation)
6 x 10^7
"Five more than twice a number is 21." Find the number.
8 (2n + 5 = 21)
Solve: |x - 3| = 7
x = 10 or x = -4