3rd quarter Math goals

PEMDAS

State Standard(s)
5.OA.1Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.
5.OA.2Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating them. For example, express the calculation "add 8 and 7, then multiply by 2" as 2 × (8 + 7). Recognize that 3 × (18932 + 921) is three times as large as 18932 + 921, without having to calculate the indicated sum or product.

Essential Understanding(s)Essential Question(s)
  • Students will understand that the relationship between numbers can be affected by the various grouping symbols.
  • Students will understand that expressions are used to symbolize the relationship between numbers.
  • What can affect the relationship between numbers?

Numerical Patterns

State Standard(s)
5.OA.3Generate two numerical patterns using two given rules. Identify apparent relationships between corresponding terms. Form ordered pairs consisting of corresponding terms from the two patterns, and graph the ordered pairs on a coordinate plane. For example, given the rule "Add 3" and the starting number 0, and given the rule "Add 6" and the starting number 0, generate terms in the resulting sequences, and observe that the terms in one sequence are twice the corresponding terms in the other sequence. Explain informally why this is so.
Essential Understanding(s)Essential Question(s)
  • Students will understand that repeating patterns lead to the identification, extension and graphing of arithmetic and geometric sequences.
  • Using what you know about numerical patterns, how can you predict how much money you will make at the end of the year?

Adding and Subtracting Fractions

State Standard(s)
5.NF.1Add 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.)

5.NF.2Solve word problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem. Use benchmark fractions and number sense of fractions to estimate mentally and assess the reasonableness of answers. For example, recognize an incorrect result 2/5 + 1/2 = 3/7, by observing that 3/7 < 1/2.

5.NF.3Interpret a fraction as division of the numerator by the denominator (a/÷ b). Solve word problems involving division of whole numbers leading to answers in the form of fractions or mixed numbers, e.g., by using visual fraction models or equations to represent the problem. For example, interpret 3/4 as the result of dividing 3 by 4, noting that 3/4 multiplied by 4 equals 3, and that when 3 wholes are shared equally among 4 people each person has a share of size 3/4. If 9 people want to share a 50-pound sack of rice equally by weight, how many pounds of rice should each person get? Between what two whole numbers does your answer lie?
Essential Understanding(s)Essential Question(s)
  • Students will understand that equivalent fractions can be a strategy for adding and subtracting fractions.
  • How do equivalent fractions help solve problems with unlike denominators when adding and subtracting?

Multiplying Fractions 

State Standard(s)
5.NF.4Apply and extend previous understandings of multiplication to multiply a fraction or whole number by a fraction. a. Interpret the product (a/b) × as aparts of a partition of into equal parts; equivalently, as the result of a sequence of operations × ÷ bFor example, use a visual fraction model to show (2/3) × 4 = 8/3, and create a story context for this equation. Do the same with (2/3) × (4/5) = 8/15. (In general, (a/b) × (c/d) = ac/bd.) b. Find the area of a rectangle with fractional side lengths by tiling it with unit squares of the appropriate unit fraction side lengths, and show that the area is the same as would be found by multiplying the side lengths. Multiply fractional side lengths to find areas of rectangles, and represent fraction products as rectangular areas.
5.NF.5Interpret multiplication as scaling (resizing), by: a. Comparing the size of a product to the size of one factor on the basis of the size of the other factor, without performing the indicated multiplication. b. Explaining why multiplying a given number by a fraction greater than 1 results in a product greater than the given number (recognizing multiplication by whole numbers greater than 1 as a familiar case); explaining why multiplying a given number by a fraction less than 1 results in a product smaller than the given number; and relating the principle of fraction equivalence a/= (n×a)/(n×b) to the effect of multiplying a/by 1.
5.NF.6Solve real world problems involving multiplication of fractions and mixed numbers, e.g., by using visual fraction models or equations to represent the problem.
Essential Understanding(s)Essential Question(s)
  • Students will understand that multiplying fractions is built upon the understanding of multiplying whole numbers.
  • Why does the answer get smaller when multiplying fractions?

Dividing Fractions

State Standard(s)
5.NF.7Apply and extend previous understandings of division to divide unit fractions by whole numbers and whole numbers by unit fractions. a. Interpret division of a unit fraction by a non-zero whole number, and compute such quotients. For example, create a story context for (1/3) ÷ 4, and use a visual fraction model to show the quotient. Use the relationship between multiplication and division to explain that (1/3) ÷ 4 = 1/12 because (1/12) × 4 = 1/3. b. Interpret division of a whole number by a unit fraction, and compute such quotients. For example, create a story context for 4 ÷ (1/5), and use a visual fraction model to show the quotient. Use the relationship between multiplication and division to explain that 4 ÷ (1/5) = 20 because 20 × (1/5) = 4. c. Solve real world problems involving division of unit fractions by non-zero whole numbers and division of whole numbers by unit fractions, e.g., by using visual fraction models and equations to represent the problem. For example, how much chocolate will each person get if 3 people share 1/2 lb of chocolate equally? How many 1/3-cup servings are in 2 cups of raisins?
Essential Understanding(s)Essential Question(s)
  • Students will understand that multiplication and division are inverse operations and that reasoning about multiplication can be used to solve division problems.
  • How are multiplication and division related?
  • Why does an answer get larger when dividing a whole number by a fraction?




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