Simplification questions and answers

Simplification: key points

Simplification questions ask you to reduce an arithmetic expression to a single value. They test speed with the order of operations, percentages, squares and roots.

• Follow the order of operations: brackets, orders (powers and roots), division and multiplication, then addition and subtraction.
• x% of N = x × N / 100. Useful values: 25% = 1/4, 20% = 1/5, 12.5% = 1/8, 75% = 3/4.
• a² − b² = (a + b)(a − b).
• Learn squares up to 30 and cubes up to 15 to save time.

How to practise Simplification

Start with the key points, then take one Simplification test without rushing. Review every explanation, note the steps you missed and repeat the topic against the clock. APTITUDE TESTER has 20 questions in 2 tests for this topic.

• Read the method before attempting a timed test.
• Record mistakes by type: concept, calculation or time management.
• Return to the hardest questions after a day and try them again.

Continue with another Quantitative topic when your accuracy is steady.

Simplification online tests

Sample Simplification questions

1. 1. 39 + 7 × 4 − 5 = ?
   1. 59
   2. 179
   3. 62
   4. 56

   Reference: q-52d38de9-19 · Report this question

   Show answer and solution

   Answer: C. 62

   Multiply first: 7 × 4 = 28. Then 39 + 28 − 5 = 62.
2. 2. 20% of 360 + 5% of 240 = ?
   1. 84
   2. 82
   3. 78
   4. 86

   Reference: q-33b34484-27 · Report this question

   Show answer and solution

   Answer: A. 84

   20% of 360 = 72 and 5% of 240 = 12. Their sum is 84.
3. 3. √289 + 12² = ?
   1. 41
   2. 158
   3. 162
   4. 161

   Reference: q-975a3544-15 · Report this question

   Show answer and solution

   Answer: D. 161

   √289 = 17 and 12² = 144, so the value is 17 + 144 = 161.

See all the questions of Test 1

Simplification: questions people ask

How many Simplification questions are there?

There are 20 Simplification questions in 2 tests. Each test has its own page that lists the questions with their answers and solutions.

How long does a Simplification test take?

A test of 10 questions has a time limit of 15 minutes, which is 90 seconds a question.

Is there negative marking?

Rules vary by set. The rules screen shows the time limit, marks, any wrong-answer penalty and calculator permission before you begin. Feedback mode has no time limit or negative marking.

Can I practise Simplification without a time limit?

Yes. Choose practice mode: there is no clock, and the answer and solution appear as soon as you select an option.