When we are asked to do a calculation for either addition, subtraction, multiplication or division, we will often decide whether to carry out the calculation ‘mentally’ or to use a ‘formal’ written ...
Speaker: Not all numbers are whole numbers. Decimals are numbers that are between two whole numbers. So 1.4 is between 1 and 2. A decimal that starts with a 0 before the decimal point is less than 1.
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