Rational Number Operations Pre-Assessment

Which expression is equivalent to 4.35 – 5.5? 4.35 + (–5.5) 5.5 – 4.35 4.35 + 5.5 4.35 – (–5.5) Solve (Hint: Line up the decimal points):3 + (−0.2) − 15.25 The answer is -12.45 Solve (Hint: Make equivalent fractions first)-6 + 10 -4 3 -1 4 -7.25 -7.333… -7.41666… -7.512 Kevin's regular rate of pay is $4 per hour. When he works overtime, he earns 1.5 times as much per hour. How much will Kevin earn for 5.5 hours of overtime? Which expression would you use to solve this problem? (4 x 5.5) + 1.5 (4 x 1.5) x 5.5 (4 x 5.5) - 1.5 (4 + 1.5) x 5.5 What is the sum of -2.16 and -1.75? 0.41 3.91 -0.41 -3.91 ? A B C D A B C D A B C D a b c d -6 + (-3) 6 + 3 -6 + 3 6 + (-3) 2.35 23.5 2.3 2.6 304 3 1 34 3 4