When solving a sequence of division operations, you must always proceed from left to right, regardless of which operation appears easier. For example, in 21 ÷ 7 ÷ 6 ÷ 2, you first calculate 21 ÷ 7 = 3, then 3 ÷ 6 = 1/2, and finally 1/2 ÷ 2 = 1/4. When dividing by a fraction, use the KCF method: Keep the first number, Change division to multiplication, and Flip the fraction to its reciprocal.
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21 ÷ 7 ÷ 6 ÷ 2 The answer is not 1. Many got it wrong! Ukraine Math Test #math #percentages #ukraineAdded:
Please remember, even if all throughout, you just have one operation which is division, you don't get to pick and choose which one is easier. So, in sums like these, you're just supposed to always go from left to right. So, first operation which we will do over here is 21 / 7, which is 3, / 6, / 2. After this also, what is the first operation which happens from your left hand side, which is 3 / 6, or rather 3 / 6, which is 1 / 2, / 2. Now, whenever there is a fraction involved, we follow the acronym of KCF, where K stands for keeping the first number as it is. C stands for changing the division sign to multiplication. F stands for flipping or taking reciprocal of 2, which is 1 / 2.
So, the answer for this question is supposed to be 1 / 4.
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