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H2 on the ROAD to Success….. If Ashley had 3 cats and each one had 4 legs, how could we find how many legs all the cats had? Ms. Massara thinks “MMM… How would I solve this? Well I know that there are 3 cats AND each cat has 4 legs….. SO I CAN ADD!! =4 legs =4 legs + =4 legs =12 legs BUT WAIT! THERE IS AN EASIER WAY!! YOU CAN ….. Multiplication is a fast way to add equal numbers. Since all 3 cats have 4 legs, instead of adding them together, we could MULTIPLY. 4 legs X 3 cats 12 legs YAHOO!! MULTIPLICATION IS A SHORT CUT!! How many legs altogether would the 3 boys have? Ms. Massara thinks “Mmm… well I know that there are 3 boys. Each boy has 2 legs… SO I CAN ADD!! 2 legs + 2 legs + 2 legs --------6 legs BUT WAIT! THERE IS AN EASIER WAY!! YOU CAN ….. Multiplication is a fast way to add equal numbers. Since all 3 boy have 2 legs, instead of adding them together, we could MULTIPLY. 3 boys x 2 legs 6 legs YAHOO!! MULTIPLICATION IS A SHORT CUT!! If a crayon box holds 7 crayons, how many crayons would 2 boxes hold? Can you think of a multiplication problem that shows this? 7 crayons X 2 boxes 14 crayons If every teacher has 3 books and there are 5 teachers, how many books do they all have? Can you think of a multiplication problem that shows this? 5 teachers X 3 books 15 books If every desk has 1 apple and there are 9 desks, how many apples are there in all? Can you think of a multiplication problem that shows this? 1 apple X 9 desks 9 apples Multiplication involves sets of objects. Can you write a multiplcation problem for these sets? I think I can do it! 5 sets of 2 each 5 X 2 =10 3 sets of 4 each 3 X 4 = 12 3 sets of 3 each 3X3=9 4 sets of 2 each 4X2=8 6 sets of 3 each 3 X 6 = 18 5 sets of 4 each 5 X 4 = 20 On your paper, draw sets to represent each of the following multiplication problems. Then solve the problems. Click on the to find the answer. 2 X 9= 5 X 1= 5 X 5= 4 X 0= 8 X 1= 6 X 4= 2 X 9=18 Let’s try another! 5 X 5= Let’s try another! 8 X 1= Let’s try another! 5 X 1= Let’s try another! 4 X 0= Let’s try another! 6 X 4= If you want to do this practice again, click the button.