Multiplication by grouping Proficiency Scale 4 3 OA

Multiplication by grouping

Proficiency Scale 4 3. OA. 7 Using mental strategies, fluently multiply and divide within 100. 2 1 I can solve real world problems involving multiplication. I CAN Use mental strategies such as: � skip counting � doubling � grouping to fluently multiply within 100. Vocabulary: multiply multiple product fact family Commutative Property Associative Property Distributive Property With help Skills: use models to show multiplication use multiplication strategies use multiplication properties

M&M’S EVERYWHERE! Using a piece of paper and either pencils, pens, markers, crayons, or anything you can write with, sort the M&M’s by drawing them into different categories! Once you are done sorting them, move on to the next slide. Blue M&M’s Green M&M’s Orange M&M’s Yellow M&M’s

The groups you made should look like mine! There are 12 different We. Of made M&M multiplication M&M’s. these, an there are 4 different colors andequation! each color has 3 pieces. 4 groups of 3 M&M’s equals 12 total M&M’s Blue M&M’s Yellow M&M’s. Green M&M’s Orange M&M’s 4 x 3 = 12

You just solved your first multiplication equation by grouping! GREAT JOB!

We are going to solve this equation, using grouping, in 2 different ways. Let’s do another and break it down 2 2 x 4 x =4 8 2 x 4=? Since two Nowwe weneed are going to How many dots dogroups wefill of We are going to make 2 First, we are going to four, we will now fill the second our first group with four have total? groups offour 4 dots! make 2 dots group with X 2 groups 4 dots -------8 dots! 2 x 4=? Let’s solve this the First, are going to our Now we we are going to fill other way! We are How many we make 4 groups with 2 dotsdo each going to make 4 groups have total? of 2! 4 groups X 2 dots -------8 dots!

Now it’s your turn to try one by yourself! 3 x 4=? The two ways you can do this 3 groups of 4 dots 4 groups of 3 dots x 3 groups x 4 dots = 12 dots! 4 groups 3 dots ------12 dots!

Nice work!

Now you are going to play MATH! It is like BINGO, but with a multiplication twist! Make sure to use the multiplication strategies you’ve learned already and grouping to solve the equations! Find the adult near you to start playing!