Math Journal Notes Unit 5

1/10/17

A number is divisible by.... 2 if it is an even number 3 if the sum of the digits is divisible by 3 5 if it ends in a 0 or 5 6 if it is also divisible by BOTH 2 and 3 7 take the last digit, double it, and subtract it from the rest of the number. If that number is divisible by 7, you can divide by 7. 8: If the last three digits of a whole number are divisible by 8, then the entire number is divisible by 8 9 if the sum of the digits is divisible by 9 10 if it ends in a 0 1/18/17 Divisibility Rules Divisible / Divisibility: Can be divided by

12/1/16

2/2/17

3/6/17 START UNIT 5 NOTES IN YOUR NEW MATH JOURNAL!

3/7/17

Fraction < 1 Fraction > 1 Fraction = 1 How To Estimate the Product (Answers) When Multiplying Fractions 3/30/17 Fraction < 1 Fraction > 1 Fraction = 1 When you multiply a number by a fraction that is less than 1, then the product will be smaller than that number. Example- 11 x 3/5 < 11, 33/5 < 11, 6 3/5 < 11 6 3/5 is less than 11 When you multiply a number by a fraction that is greater than 1, then the product will be larger than that number. Example- 4 4/9 x 7/3 > 4 4/9, 40/9 x 7/3 > 4 4/9, 280/27 > 4 4/9 10 18/27 is greater than 4 4/9 When you multiply a number by a fraction that is equal to 1, then the number will stay the same. Example- 2 6/7 x 10/10 = 2 6/7, 2 6/7 x 1 = 2 6/7, 2 6/7 = 2 6/7 2 6/7 is equal to 2 6/7

You Try It:

You Try It: