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Which number has the greatest absolute value? -9 9 4 12 What is the absolute value of 21? 21 -21 1/21 212 If x 0 or 7 −7 or 0 −7 or 7 72 =7, then x is A school enrolled 2000 students in 2005 and enrolled 1800 students in 2010. What was the percent decrease in enrollment? 5% 10% 15% 20% A television that regularly sells for $600 is on sale for $510. What is the percent decrease? about 17% 10% 15% about 13% A student scored 280 on a test. On the next attempt, the student scored 336.
What was the percent increase? 25% 20% 15% 10% A calculator that once sold for $120.00 now sells for $90.00. What is the percent decrease? 18% 25% 20% 28% A pair of shoes regularly costs $54.00 is put on sale for $20% off. What is the sales price of the shoes? $44.00 $33.20 $ $43.20 10.80 A meal cost $28.00 and you choose to leave a 15% tip. How much do you pay? $43.00 $34.80 $32.20 $31.80 A store has calculators on sale for 20% off. If a calculator normally sells for $82.00, what is the sales price? $73.90 $70.99 $67.40 $65.60 A computer that normally sells for $380.00 is on sale for 12% off. What is the sale price? $326.60 $344.99 $334.40 $314.90 58 56 258 256 52•54= 913 942 313 342 36•37= a14 a24 a48 a144 a12•a2= 67 612 367 3612 63×64= 25 96 144 343 What is 32•42 50 33 200 100,000 Evaluate 52•23 32 33 336 3−36 36•38 312 = 10 10−12 10−1 107 103 10−4 = a14 a5 a a−14 a3•a6 a4 = 16a 4a2 a6 a8 (a2)4= 87 810 825 80 (82)5= 62m m8 m12 6m2 (m6)2 The square root of 28 is a number between which two integers. 4 and 5 5 and 6 6 and 7 27 and 29 The value of √87 is between which two whole numbers? 9 and 10 8 and 9 7 and 9 0 and 1 Mercury's average distance from the sun is about 57,910,000 km. The number written in scientific notation is 579.1×105 5.791×106 5.791×107 5.791×10−6 Mercury travels about 107,000 miles per hour. The number written in scientific notation is 1.07×105 1.07×106 10700.0×10 1.07×104 A penny has a mass of about 2.5×10−3 kg. Written in standard notation this is 25,300 kg 0.0025 kg 0.025 kg 0.00025 kg The number 0.045 written in scientific notation is 4.5×10-2 4.5×10-3 4.5×102 45×10-3 What does 5 6 − 3 4 = There are 12 people at a party. Each person will be served one third of a pizza. How many pizzas are served? 4 3 16 36 Which is of the following is equivalent to 0.25 0.5 5 2 0.4 0.5 Which expression not equal to 2? −11+9 −9+11 −13+15 38÷19 8× 4 1 8 16 1 2 ÷ 4 1 = What is 7% of 10,000? 700 70 70,000 7,000 Caleb needs to find 3% of his medical costs for tax purposes. Which expression can he use to determine 3% of $2,500.00 3×2,500 0.3×2,500 0.03×2,500 30×2,500 Hannah puts $400.00 into an account that pays 4% simple interest. How much interest will be earned after three years? $48.00 $ $16.00 $160.00 32.00 Mario put $400.00 into an account that pays 3% simple interest. After four years, how much is in the account? (Assume he did not make any withdrawels.)
$412.00 $424.00 $448.00 $520.00 |