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3) What is the digit in the one's place of 6734?
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This kind of problem relies on the fact that some numbers have repeating one's place digits when taken to increasing powers. Keep taking powers of 3 (2,3,4, ...) until you notice a pattern. Divide the power you want by the number of repeating digits. The remainder will be the number of the digit in the repeating sequence.
The one's digit is _____
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4) Counted cross stitch is a way of painting by stitching with silk thread. Each cross stitch fills a (3/16) inch x (3/16) inch square. How many stitches go in to a 12 x 15 inch cross stitch painting?
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Compute the area of the cross stitch and the area of the painting and divide the area of the painting by the area of the cross stitch.
______ stitches are in the painting.
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5) Ruby selects earrings from a rack that are all priced the same. The store has to charge 10% tax. If there was no sales tax, then Ruby could buy one more pair of earrings for the same amount of money she is spending. How many pairs of earrings is she buying?
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Let N = the number of pairs of earrings Ruby is buying.
The amount Ruby pays totally is (in terms of N) __________
Set that equal to one more pair of earrings and solve for N:
N = _____
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