Unformatted text preview: MAT 150 Exam 3 Review ARushall Spring 2008 Wednesday 17 April
Chapter 6 Summary (pages287-8) Section 6.1 Multiplying Fractions o Write and solve story problems involving fractions o Draw a picture to represent multiplication problems such as 1 × 5 and 36 . Be able to give both mixed number and improper fraction when possible. o Solve a story problem involving fractions. Section 6.2 Multiplying Decimals o Explain why we put the decimal point where we do when we multiply. Use the fraction forms of the numbers in your explanation. o Write story problems for given decimal multiplication problems. o Use base-ten blocks to illustrate how decimal multiplication can be represented as area. (Like 6.2 #10) Section 6.3 Multiplying Negative Numbers o Explain why a positive times a negative is a negative by considering negative numbers as owed amounts. o Use the positive and negative counters in a paper bag method to illustrate the following pos × pos = pos pos × neg = neg neg × pos = neg neg × neg = pos o Use Mail Time Situations to illustrate pos × pos = pos pos × neg = neg neg × pos = neg neg × neg = pos
1 2 ×1 1 3 4
Chapter 7 Summary (pages 378-81) Section 7.1 The Meaning of Division o Write and recognize story problems for division as either How Many Groups? or How Many per Group? o Write and recognize whole number division problems that are best answered Exactly With a decimal With a mixed number As a whole number with a remainder
o Explain why we cannot divide by zero. Explain why we can divide 0 by a nonzero number. o Use division to solve problems.
Section 7.2 Understanding Long Division o Use base-ten pieces and the scaffold method to divide. o Use the standard algorithm for long division to divide. Section 7.3 Fractions and Division o Read the entire summary of this section on page 379 Section 7.4 Dividing Fractions o Write and recognize story problems for fraction division as either How Many Groups? or How Many per Group? o Use a number line to represent a fraction division problem. You may use pattern blocks, fraction strips, fraction towers, or Cuisenaire rods to help you. Section 7.5 Dividing Decimals o Write and recognize story problems for decimal division as either How Many Groups? or How Many per Group? o Explain why we put the decimal p...