TACHS Math : Decimals

Study concepts, example questions & explanations for TACHS Math

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Example Questions

Example Question #1 :Decimals

Square 0.44.

Possible Answers:

Correct answer:

Explanation:

To square a number means to multiply it by itself, so we seek to compute

To multiply two decimal fractions, first multiply, ignoring the decimal points:

Move the (implied) decimal point the number of spaces right equal to the total number of digits right of the decimal points in the factors; this can be seen to be four:

The square of 0.44 is 0.1936.

Example Question #11 :Math

Tiffany earns每一个星期。If Mark earnsless than Tiffany, what is the sum of their salaries each week?

Possible Answers:

Correct answer:

Explanation:

Start by finding out how much Mark makes. Since he makesless than Tiffany, we can write the following to find Mark's weekly salary:

Mark must make每一个星期。现在,添加together their salaries to find the sum.

Example Question #12 :Math

Rachel earnsan hour as an assistant in a science lab. How manyhour work weeks will she need to work in order to pay for a car that costs?

Possible Answers:

Cannot be determined

Correct answer:

Explanation:

Start by figuring out how much Rachel can earn in each week by multiplying her hourly rate by the number of hours worked each week.

Now, divide the amount she needs to earn by the amount earned each week to find how many weeks she will need to work to earn that amount.

Rachel must work forweeks in order to earn enough for the car.

Example Question #11 :Tachs: Math And Ability

一个dd.

Possible Answers:

Correct answer:

Explanation:

In order to solve this problem we need to line up the decimal places and add.

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