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Place Value Data Analysis Variables Decimals Mental Math 1pt 1 pt 1 pt 1pt 1 pt 2 pt 2 pt 2pt 2pt 2 pt 3 pt 3 pt 3 pt 3 pt 3 pt 4 pt 4 pt 4pt 4 pt 4pt 5pt 5 pt 5 pt 5 pt 5 pt Write the place value of the underlined digit. 56.421 56.421 hundredths place What is the whole number portion of the decimal? 417. 0438 417 What is the place value of the underlined digit? 34.3269 34.3269 The nine is in the ten thousandths place. Write this in number form. Six hundred forty two tenthousandths Six hundred forty two tenthousandths 0.0642 Write this number in expanded form. 31.0456 31.0456 = 30 + 1 + 0.04 + 0.005 + 0.0006 Which type of graph would be the best for comparing the annual rainfall in Phoenix, Arizona and San Antonio, Texas? A. B. C. D. Circle graph Scatter-plot Line Graph Bar Graph C. Bar graph Find the mode of this set of data. Be ready to explain your answer. 74, 67, 54, 66, 80, 77, 70, 82, 79, 84, 75 No mode There is no number that occurs more often than the others in the data set. Find the range in this set of data. -2, 6, 5, -4, 6, 3, 2 The range is 10. Find the median in this set of data. 215, 207, 210, 208, 211, 205, 215, The median is 210. 205, 207, 208, 210, 211, 215, 215 Find the mean in this set of data. 5.3, 2.7, 3.1, 4, 5.8 The mean is 4.18 Solve the equation for the variable. 27 = y + 12 y= y = 15 Solve the equation. z - 31 = 17 z = 48 Solve the equation. 47 = a + 36 a = 11 Solve the equation. 76 = y - 18 y = 94 Solve the equation. 9n + 1 = 73 n=8 Where does the decimal belong? 0.7 X 12 = A. B. C. D. 0.84 0.084 8.4 84.0 C. 8.4 27 + 0.185 = 27 + 0.185 = 27.185 2.57 + 7.762 + 0.5 = 2.57 + 7.762 + 0.5 =10.832 15 – 6.108 = 15 – 6.108 = 8.892 If n = 1.78, which equation is true? A. n – 0.3 = 2.08 B. 2.3 + n = 4.08 C. n + 0.3 = 1.48 D. 5 – n = 4.22 B. 2.3 + n = 4.08 Greater, equal or less than? 656.07 656.23 656.07 < 656.23 8.7 X 100 = 8.7 X 100 = 870 0. 64 ÷ 10 = 0. 64 ÷ 10 = 0.064 2x = 38 x= 2x = 38 x = 19 10 x 10 x 10 x 10 x 10 x 10 = 10 x 10 x 10 x 10 x 10 x 10 = 1,000,000