Henry County Public Schools



SOL 8.1 The student will compare and order real numbers. THINGS TO KNOW:? Use BENCHMARK reasoning and number lines first. Are the values1 1HINTS/TRICKY FACTS?Any non-zero number to the zero power is 1.? Any number to the first power isDESMOS? For negative exponents as small as?3 and positive exponents as large as 8, the calculator will convertcloser to or between ?1, ?2or 1?, 0, ,2itself.? The sign (+/-) of the exponent in ascientific notation to standard form for you.? If necessary, convert values to thesame form to compare.? Estimates of irrational numbers are always approximations.? An exponent describes the numberof times a base is multiplied.? In scientific notation, if the exponent is negative, you are dividing by 10s, moving the decimal left. If the exponent is positive, you are multiplying by 10s, moving the decimal right.number written in scientific notation has nothing to do with the sign of the standard form number.?A number with more decimal places is not necessarily larger.§ 0.445323 is not larger than 0.5?Ascending = increasing; from smallest to largest?Descending = decreasing; from largest to smallestExample: 3.5 x 105 =3.5 10 5?The fraction key can be used to convert fractions to decimals.7Example: =87 81). Which of the following could be placed in the blank to make a true statement?A. 6.5 x 10?1 B. 0.32 C. 352 < < 0.773D. 0.6812). Which correctly lists the number in descending order?A. 2,1.3,1.3,3 , 15%2C. 15%,2, 3 ,21.3,1.3B. 3 ,22, 1.3,1.3,15%D. 2,3 , 1.3,21.3,15%3). Put the following numbers in ascending order.π 10 2 73 83.1 x 10?2 115%4). Correctly place the following numbers on the number line:11, ?20, π,? 47.3%,? 4 14 5). Which of the following inequality statement is NOT true?A. 0.1% > 3 x 10?4B. 0.25 < 25C. 7> 2.7 D.3.14 < π6). Select all real numbers that are greater than ?3.? 15 2.3 x 10?2 -3.7 x 100 ? 113?2 23?3.097). Select the three real numbers that are represented by points on the number line below.29 ? 13 123 ? 21 139 238). Which of the following could NOT be placed in the blank to make a true statement?2.3 x 10?2< < 1.7A. 25% B. 123C. 3.5 x 10?1 D. 1589). Select each number that is between 535% and 6.01 x 100.5.9 6 x 10?1 4785.3 60% 3510).Which is the largest value?A. 7.3 x 10?1 B. 23C. 47% D. 0.32Questions/comments about this activity?Contact: Kelly Johnson – kpjohnson@henrico.k12.va.us

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