M5N1. Students will further develop their understanding of whole numbers. • A. Classify the set of counting numbers into subsets with distinguishing characteristics (odd/even, prime/composite) • B. Find multiples and factors • C. Analyze and use divisibility rules.
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M5N1. Students will further develop their understanding of whole numbers. A. Classify the set of counting numbers into subsets with distinguishing characteristics.
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M5N1. Students will further develop their understanding of
whole numbers.• A. Classify the set of counting numbers
into subsets with distinguishing characteristics (odd/even, prime/composite)
• B. Find multiples and factors
• C. Analyze and use divisibility rules.
Even and Odd NumbersEven numbers can be divided evenly into groups of two. The number four can be divided into two groups of two. Odd numbers can NOT be divided evenly into groups of two. The number five can be divided into two groups of two and one group of one. Even numbers always end with a digit of 0, 2, 4, 6 or 8. 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 are even numbers. Odd numbers always end with a digit of 1, 3, 5, 7, or 9. 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31 are odd numbers.
1Odd
2Eve
n
3Odd
4Eve
n
5Odd
6Eve
n
7Odd
8Eve
n
9Odd
10Eve
n
11Odd
12Eve
n
1Odd
3Odd
5Odd
7Odd
9Odd
11Odd
2Even
4Even
6Even
8Even
10Even
12Even
Even or Odd?
• 26• Even• 31• Odd• 70• Even• 157• odd
Prime & Composite
The numbers 0 and 1 are neither prime nor composite.
• A multiple of a number is the product of the number and any counting number.
• D
Divisibility Rules
• 2 If the last digit is even• 3 If the sum of the digits is divisible by 3• 4 If the last two digits form a number divisible by 4• 5 If the last digit is a 5 or a 0• 6 If the number is divisible by both 2 and 3• 9 If the sum of the digits is divisible by 9• 10 If the number ends in 0, it is divisible by 10.
Let’s Practice
Tell whether each number is divisible by 2,3,4,5,6,9,or 10
39333,0122,3,4,69902,3,5,6,9,10
M5N2. Students will further develop their understanding of decimal
M5N4. Students will continue to develop their understanding of the meaning of
common fractions and compute with them.
• A. Understand division of whole numbers can be represented as a fraction
• B. Understand the value of a fraction is not changed when both its numerator and denominator are multiplied or divided by the same number because it is the same as multiplying or dividing by one.
• C. Find equivalent fractions and simplify fractions.• E. Explore finding common denominators using concrete, pictorial,
and computational models.• G. Add and subtract common fractions and mixed numbers with
unlike denominators.• H. Use fractions (proper and improper) and decimal fractions
interchangeably.• I. Estimate products and quotients.
Fractions As Division Problems• Any fraction can be thought of as a
division problem. For example, when 2 units are separated into 3 equal parts, each is 2/3 of 1 unit.
• 2/3 can be written as 2 divided by 3
Equivalent Fractions
• Remember: To find an equivalent fraction you can divide or multiply. You must always divide or multiple BOTH the numerator and denominator by the same number.
• B. Compare and contrast multiple graphic representations (circle graphs, line graphs, bar graphs, etc.) for a single set of data and discuss the advantages/disadvantages of each.