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College Mathematics Homework Practice: Number Sense
Classroom Worksheet
College Mathematics Homework Practice: Number Sense
Number Sense Homework Practice
Name____________________________
Date________________
Score______ / 15
Grade: College
Subject: Mathematics
Topic: Number Sense
Time: 20 Minutes
Difficulty: Challenging
Questions: 15
Instructions: Show all work on a separate sheet or in the space provided. Simplify each answer completely. Use exact values when possible, and round only when instructed. Questions increase in difficulty.
Skills Practiced:
Number Sense
Mathematics
Critical Thinking
Problem Solving
1Question
Write 7,450,000 in scientific notation.
2Question
Evaluate: |−18| + 6.
3Question
Round 0.004967 to the nearest ten-thousandth.
4Question
Find the prime factorization of 84.
5Question
Compute: 3/4 + 5/6.
6Question
Write 0.375 as a fraction in simplest form.
7Question
Evaluate: (2^5)(2^3).
8Question
Simplify: 15 − [4(2 − 7)] + 3.
9Question
Write the greatest common divisor of 72 and 120.
10Question
Find the least common multiple of 18 and 30.
11Question
A number is 40% of 180. What is the number?
12Question
Order the following from least to greatest: −3/5, 0.62, 5/8, −0.58.
13Question
Simplify: (7/8) ÷ (14/15).
14Question
A value increases from 250 to 290. What is the percent increase?
15Question
Without using a calculator, determine which is larger and by how much: 0.7^3 or 7/10. State the difference as a decimal.
Answer Key
#
Answer
1
7.45 × 10^6
2
24
3
0.0050
4
2^2 × 3 × 7
5
19/12 or 1 7/12
6
3/8
7
256
8
38
9
24
10
90
11
72
12
−3/5, −0.58, 0.62, 5/8
13
15/16
14
16%
15
7/10 is larger by 0.357, since 0.7^3 = 0.343 and 0.700 − 0.343 = 0.357