Fill in the missing number
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Fill in the missing number
Let's look at the numbers from left to right:
We notice that the common operation is +2:
Therefore, the next sequence will be:
18, 16, 14, 12
All negative numbers appear on the number line to the left of the number 0.
Look at the difference between consecutive terms. In this sequence: 2-0=2, 4-2=2, 6-4=2. Since the difference is always 2, that's your pattern!
Try calculating the differences between each pair of numbers. Write them down: 0 to 2 (+2), 2 to 4 (+2), 4 to 6 (+2). When you see the same difference repeating, you've found your pattern!
Yes! Some patterns multiply by the same number each time, or add increasing amounts. But arithmetic sequences like this one always add (or subtract) the same amount.
Count the empty spaces in the diagram or follow the question instructions. Here we have 4 empty positions, so we need the next 4 numbers: 12, 14, 16, 18.
Some arithmetic sequences decrease by the same amount each time. For example: 20, 18, 16, 14... The common difference would be -2 instead of +2.
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