Five pages on adding and subtracting fractions that have the same denominator. Page 1 joins parts of one whole on fraction strips (1/5 + 3/5 is 4 fifths), then adds two and three fractions. Page 2 subtracts by jumping back on number lines, then subtracts a fraction from 1 or 2 by writing the whole number as a fraction first (1 − 3/8 = 8/8 − 3/8). Page 3 adds and subtracts mixed numbers in columns, trading 1 whole for 5 fifths when the fractions need it, and also by writing them as fractions first. Page 4 checks other students' answers with the benchmarks 0, 1/4, 1/2, 3/4, and 1 (7/10 + 9/10 cannot be 16/20, because the sum is about 1 3/4), then adds and subtracts and writes each answer in simplest form. Page 5 makes a line plot of caterpillar lengths in eighths of an inch and answers questions from it, then solves story problems with an equation.
Before page 1, fold a paper strip into fifths and shade 1 part, then 3 more: the parts are still fifths, so only the number of parts changes. On page 2, have students say the jumps out loud: "seven eighths, six eighths, five eighths." Before page 3, show 6 1/3 as 5 4/3 with fraction pieces, so trading a whole makes sense.
Measure things around the house to the nearest eighth of an inch, then ask how much longer one is than another. In the kitchen, ask how much flour is left in a 1-cup measure after 3/8 cup is used.
This pack supports the following Common Core State Standards for Mathematics:
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A 5-page fractions pack for 4th grade, all with like denominators. Join parts of one whole on fraction strips, subtract by jumping back on number lines, take a fraction away from 1 or 2, and add and subtract mixed numbers, trading a whole when needed. Check answers with the benchmarks 0, 1/4, 1/2, 3/4, and 1, write answers in simplest form, make a line plot of eighths, and solve story problems with an equation. Every page comes in color and in black and white. Answer keys included.
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