standard_description: Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.)
problem_activity: Problem 1
Match each value written in unit form with its equivalent value written in fraction form and decimal form.
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Problem 2
Draw an area model to match each decimal below.
a.   0.9
b.   0.2


aligns: no