Mini-Lecture 1.3: Fractions - Edubirdie

University:
Montgomery College
Course:
MATH 130: Elements of Mathematics I: Mathematical Reasoning and Number Systems
Academic year:

2023
Views:

278

Pages:

1
Author:

Cyncuncewc3b4

Mini-Lecture 1.3 Fractions Learning Objectives: 1. Write fractions in simplest form. 2. Multiply and divide fractions. 3. Add and subtract fractions. Examples: 1. Simplify by dividing the numerator by the denominator. 3 40 16 a) b) c) 3 4 1 d) 0 7 e) 12 0 2. Write each fraction as an equivalent fraction with the given denominator. 3 4 a) with a denominator of 40 b) with a denominator of 56 10 7 3. Simplify the following fractions. 5 9 a) b) 10 15 4. Multiply or divide as indicated. 1 5 28 8 i a) i b) 3 7 6 21 5. Add or subtract as indicated. 1 3 1 7 + a) + b) 8 8 6 15 c) 88 66 d) 300 550 c) 6 9 ÷ 19 13 d) 9 3 ÷ 14 10 c) 5 1 − 9 12 d) 7 5 − 8 6 d) 4 2 3 ÷1 5 5 6. Perform the indicated operations on mixed numbers. 2 5 3 1 3 a) 13 + 6 b) 5 − 2 c) 2 i6 3 8 7 3 7 Teaching Notes: • • • • Some students may need a visual review of the meaning of a fraction (i.e. pie drawing). Most students have experience with fractions but may have forgotten the procedures. Stress that all fractions must be written in simplified form. Each section in the text has 3 worksheets in the Extra Practice featuring differentiated learning. Answers: 1a) 1; 1b) 10; 1c) 16; 1d) 0; 1e) undefined; 2a) 12/40; 2b) 32/56; 3a) ½; 3b) 3/5; 3c) 4/3; 3d) 6/11; 4a) 5/21; 4b) 16/9; 4c) 26/57; 4d) 15/7; 5a) ½; 5b) 19/30; 5c) 17/36; 5d) 1/24; 6a) 20 7/21; 6b) 2 4/7; 6c) 15; 6d) 19/7;

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