Читать книгу How to Win at Aptitude Tests Vol II - Iain Maitland, Iain Maitland - Страница 12

Questions of this nature include numbers and are constructed to show how well you reason with figures. Those that might arise in a general intelligence test will probably focus on adding and subtracting, multiplying and dividing, fractions and percentages and continuing a series of numbers. Specific tests of numerical ability might concentrate on questions relating to numerical awareness, estimation and checking.

Numerical awareness questions take a closer look at your ability to add, subtract, multiply and divide. Numerical estimation appraises your potential for estimating both quickly and accurately, which may be a key requirement for the job. Numerical checking evaluates your aptitude for spotting errors in handwritten and printed data. Here are various example questions and answers.

Example: Adding and Subtracting

Do the following calculation, without using a calculator.

Question: 295 − 97 + 123 − 33 + 17 =

Answer: 305

Example: Multiplying and Dividing

Answer the following question without the aid of a calculator.

Question: 18 x 9 ÷ 3 =

Answer: 54

Example: Fractions and Percentages

Calculate the following.

Question: 6% of 75 =

Answer: 4.5

Example: Continuing a Series of Numbers

Complete this sequence of numbers.

Question: 7 12 16 19 21 ____

Answer: 22 (Numbers increase at a decreasing rate: +5, +4, +3, +2, +1.)

Example: Numerical Awareness

Circle any mistakes in these calculations, and put in the correct figures next to them.

Question:

Answer:

Example: Numerical Estimation

Calculate the following, placing a cross (X) in the box representing the figure that is nearest to your answer.

Question: A man walks 3.5 miles per hour for five hours each day. How long would it take him to complete a 127-mile journey?

5 days
6 days
7 days
8 days
9 days
10 days

Answer: 7 days (3.5 miles per hour x 5 hours per day = 17.5 miles per day. 127 miles ÷ 17.5 miles per day = 7.26 days)

Example: Numerical Checking

Circle any differences in these lists.

Question:

1. 378963/43	1. 378963/47
2. 949494/46	2. 944949/46
3. 327272/77	3. 327272/77
4. 411114/31	4. 411144/31
5. 696692/26	5. 696992/26

Answer: