Rama is stringing beads whose lengths are each 0.19 inches. How can rounding be used to estimate the length of a row of
9 beads?
1. Since the beads are about 0.20 inches, the length of a row of 9 beads will be approximately 9 + 0.20 = 9.20 inches.
2. Since the beads are about 0.10 inches, the length of a row of 9 beads will be approximately 9 + 0.10 = 9.10 inches
3. Since the beads are about 0.10 inches, the length of a row of 9 beads will be approximately 9 x 0.10 = 0.80 inches.
4. Since the beads are about 0.20 inches, the length of a row of 9 beads will be approximately 9 x 0.20 = 1.80 inches.
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