Lesson Quizzes Preview 2-1: Rational Numbers

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Presentation transcript:

Lesson Quizzes Preview 2-1: Rational Numbers 2-2: Comparing and Ordering Rational Numbers 2-3: Adding Subtracting Rational Numbers 2-4: Multiplying Rational Numbers 2-5: Dividing Rational Numbers 2-6: Adding and Subtracting with Unlike Denominators 2-7: One-Step Equations with Rational Numbers 2-8: Two-Step Equations with Rational Numbers

2-1 Rational Numbers Lesson Quiz Write each decimal as a fraction in simplest form. 27 100 – 5 8 1. 0.27 2. –0.625 13 6 3. Write as a decimal. 2.16 6. Tommy had 13 hits in 40 at bats for his baseball team. What is his batting average? (Batting average is the number of hits divided by the number of at bats, expressed as a decimal.) 0.325

< > > 2-2 Comparing and Ordering Rational Numbers Lesson Quiz Compare. Write <, >, or =. 1 4 1 3 < 1. 2 9 > 2. – –0.29 6 7 7 8 3. –2 –2 > 4. Sarah competed in a long-jump contest. Her first jump was 3.75 m, her second jump was 3 m, and her third jump was 3 m. Which jump was the longest? 8 9 9 11 second jump

2-3 Adding and Subtracting Rational Numbers Lesson Quiz Add or subtract. 1. –1.2 + 8.4 7.2 2. 2.5 + (–2.8) –0.3 3 4 + 5 4 – 1 2 – 3. Evaluate. 4. 62.1 + x for x = –127.0 –64.9 5. Sarah’s best broad jump is 1.6 meters, and Jill’s best is 1.47 meters. How much farther can Sarah jump than Jill? 0.13 m

– – 2-4 Multiplying Rational Numbers Lesson Quiz Multiply. 1 7 1 2 7 1. 9 2 3 5 8 – 5 12 2. – 3. –0.47(2.2) –1.034 1 2 45 4. Evaluate 2 (x) for x = . 2 8 9 Edgar runs mile each day. What is the total distance that Edgar runs in a 7-day week? 5. 6 miles 2 9

2-5 Dividing Rational Numbers Lesson Quiz Divide. 5 6 1 2 –1 89 1. 2 ÷ –1 2. –14 ÷ 1.25 –11.2 3. 3.9 ÷ 0.65 6 112 x 4. Evaluate for x = 6.3. 17.7 5. A penny weighs 2.5 grams. How many pennies would it take to equal one pound (453.6 grams)? about 182

2-6 Adding and Subtracting with Unlike Denominators Lesson Quiz Add or subtract. 1. 5 14 1 7 12 + 2 3 12 7 1 6 2. 8 – 1 –2 1 15 3. 3 5 2 3 + –2 38 9 16 13 16 4. Evaluate – n for n = . 1 12 5. Robert is 5 feet 6 inches tall. Judy is 5 feet 3 inches tall. How much taller is Robert than Judy? 3 4 2 in. 3 4

2-7 One-Step Equations with Rational Numbers j = –15 5 12 Lesson Quiz Solve. x = 41.1 2 3 3 4 1. x – 23.3 = 17.8 2. j + = –14 3 5 d 4 = 2 3 8 1 2 d = 9 1 15 y = 3. 9y = 4. 2 5 5. Tamara can mow acre in one hour. If her yard is 2 acres, how many hours will it take her to mow the entire yard? 5 hours

2-8 Two-Step Equations with Rational Numbers Lesson Quiz Solve. 1. – x – 3 = 10 2. 7y + 25.68 = –26.12 3. –8.3 = –3.5x + 13.4 4. = 3.1 5. The cost for a new cell phone plan is $39 per month plus a one-time start-up fee of $78. If you are charged $1032.96, how many months will the contract last? 1 9 x = –117 y = –7.4 x = 6.2 y + 5 11 y = 29.1 24 months