This Math quiz is called 'Decimal Numbers 1' and it has been written by teachers to help you if you are studying the subject at elementary school. Playing educational quizzes is an enjoyable way to learn if you are in the 3rd, 4th or 5th grade - aged 8 to 11.
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Decimal numbers are numbers that are not whole. 3, 7, 9 and 10 are whole numbers. 3.4, 7.1, 9.2 and 10.3 are decimal numbers. Can you spot the difference? The decimal numbers have a 'dot' which is called a decimal point. Adding and subtracting decimal numbers is just like doing it with whole numbers, for example 11 + 12 = 23 and 1.1 + 1.2 = 2.3. Decimal numbers can also be changed into the whole number they are closest to. We call this rounding up or down. For example, 4.7 would be rounded up to 5 but 4.4 would be rounded down to 4.
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