Friday, September 26, 2014

Week 4 POW Answer

The answer is 25 for the first question and the crossings follow the pattern 2 gnomes across, 1 gnome back, I ogre across, 1 gnome back, 2 gnomes across...cont.)

Thursday, September 25, 2014

Multiplication Strategies



Common Core Standard 4.OA.1: Interpret a multiplication equation as a comparison, e.g., interpret 35=5x7 as a statement that 35 is 5 times as many as 7 and 7 times as many as 5. Represent verbal statements of multiplicative comparisons as multiplication equations.

Monday, September 22, 2014

Prime and Compostie Numbers

 
Common Core Standard 4.OA.4: Find all the factor pairs for a whole number in the range 1-100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1-100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1-100 is prime or composite.

Thursday, September 18, 2014

Factors/Factor Pairs

 
Common Core Standard 4.OA.4: Find all the factor pairs for a whole number in the range 1-100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1-100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1-100 is prime or composite.

Wednesday, September 17, 2014

Multiplication/Division Strategies

 
Common Core Standard 4.OA.1: Interpret a multiplication equation as a comparison, e.g., interpret 35=5x7 as a statement that 35 is 5 times as many as 7 and 7 times as many as 5. Represent verbal statements of multiplicative comparisons as multiplication equations.
 
Common Core Standard 4.OA.2: Multiply or divide to solve word problems involving multiplicative comparison, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparison.