CSET Multiple Subjects Subtest II Mathematics (Latest Update 2025 / 2026) Questions & Answers | Grade A | 100% Correct
Question:
Decimals
Answer:
Numbers to the left of the decimal point are whole numbers; numbers to the right of the decimal point are fractions with denominators of only 10, 100, 1,000, 10,000, etc.
Example: 0.6 = 6/10 = 3/5
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Question:
Adding and subtracting decimals
Answer:
-Line up the decimal points and then add or subtract in the same manner you would add or subtract regular numbers -Adding in zeros can make the problem easier to work with -Whole numbers can have decimal points to their right
Question:
Multiplying decimals
Answer:
-Multiply as usual -Count the total number of digits above the line which are to the right of all decimal points -Place your decimal point in your answer so there is the same number of digits to the right of it as there was above the line
Example: 40.012 (3 digits) x 3.1 (1 digit) = 124.0372 (4 digits)
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Question:
Dividing decimals
Answer:
-The same as dividing other numbers, except that if the divisor (the number you're dividing by) has a decimal, move it to the right as many places as necessary until it is a whole number -Move the decimal point in the dividend (the number being divided into) into the same number of places -Sometimes you may have to add zeroes to the dividend (the number inside the division sign)
Example: 5 ÷ 1.25 = 500 ÷ 125
Question:
Changing decimals to percents
Answer:
-Move the decimal point two places to the right -Insert a percent sign
Example: .75 = 75%
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Question:
Changing percents to decimals
Answer:
-Eliminate the percent sign -Move the decimal point two places to the left (sometimes adding zeros will be necessary)
Example: 5% = .05
Question:
Changing fractions to percents
Answer:
-Multiply by 100 -Insert a percent sign
Example: 2/5 --> 2/5 x 100 --> 200/5 --> 40%
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