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Science 10 More Significant Digits and Scientific Notation Worksheet Part A: Solve the following mathematical problems so that the answers have the correct number of significant digits. 1) 334.54 km + 198 km = ________________ 2) 34.1 km/ 1.1h = ________________ 3) 2.11 m / 34 s = ________________ 4) 0.0010 m – 0.11 m = ________________ 5) 349 cm + 1.10 cm + 100 cm = ___________ 6) 450 m / 114 s = _____________ 7) 298.01 km+ 34.112 km =_______________ 8) 84 m/s x 31.221 s = ________________ 9) 22.4 m x 0.1m = ________________ 10) 465km / 5.21h = ________________ Part B: Convert the following numbers into scientific notation: 1) 3,400 _______________________ 5) 45.01 _________________________ 2) 0.000023 _______________________ 6) 1,000,000 _________________________ 3) 101,000 _______________________ 7) 0.00671 _________________________ 4) 0.010 _______________________ 8) 4.50 _________________________ Part C: Rearrange each of the following to solve for the variable in brackets: 1) v = d/t (d) 6) v2 = v1 + at (v1) 2) v = d/t (t) 7) v1 = v2 - at (v2) 3) a = v /t (t) 8) y = x + 3 (x) 4) a = v/t (v) 9) y = 3x + 7 (x) 5) a = v2 – v1 (v1) t 10) 2x = y – 10 (y) Part D: Convert each of the following to the units stated: 1) 30 s , convert to min ________________ 6) 650 m, convert to km _________________ 2) 0.510km, convert to meters _____________ 7) 0.0300 h, convert to s _________________ 3) 102km/h , convert to m/s 8) 5 km/h , convert to m/s ____________ 4) 34min, convert to hours _______________ 9) 45 m/s , convert to km/h ____________ 5) 3.5 h , convert to min _________________ 10) 3600s, convert to hours ____________ ____________