11 How can you show all this mathematically? 9 X 3 = 27Because 9 groups of 3= 27or27÷3The last two both mean27 divided by 3or 327
12 Work on this one!!!You have a giant container of ice cream and you’re going to makequadruple scoop cones for your friends. The container has enoughice cream for 28 scoops. How many quadruple-scoop cones can you make?By the way,4A quadruple scoop cone has how many scoops ofIce-cream
14 What does the question look like mathematically? Division is sharing or grouping a number into equal partsFor example6÷2 = 3 equal groups with 2 in each group326But let’s get back to the ice cream…
15 We have 28 scoops of ice cream and we need to find out how many equal groups of 4 we can make. How can we write a math sentence to represent this?Is it 4 x 28?Is it 28 ÷ 4Is it ?Is itIs itWhich one of these is used to share 28 into equal groups of 4?
16 Sometimes to solve a division problem like 28 ÷ 4, we we may use a lot of subtraction…= 241 cone2 cones= 20= 163 conesYou can continue subtracting 4 scoopsof ice cream until there are none left…
17 Besides subtraction, we could draw a diagram or use manipulatives for help…
18 Here we use a diagram to divide the 28 ice cream scoops into groups of 4…
19 Our multiplication facts (and fact families) can really help in division… How many ice cream scoops would you use for4 cones?
20 If 4 cones = 16 scoopsHow many cones would it take to reach 28 scoops?
21 What number (of cones), multiplied by 4 (scoops of ice cream) = 28 scoops in all?5 cones x 4 scoops = 20 scoops6 x 4 =24 scoops7 x 4 =28 scoops
22 Finally, you can use fact families to help with division… If 7 x 4 = 28Than 28 ÷ 4 = 7
24 Work on this one!!!You have a container of ice cream and you’re going to maketriple scoop cones for your friends. The container holds18 scoops. How many triple-scoop cones can you make?By the way,3A triple scoop cone has h scoops of ice-cream
38 I think you NEED more bags!!! Uh-oh, you have 100 red bags of apples, (with 300 apples in them)But you still have 471 apples left in your basket…I think you NEED more bags!!!
39 Hey, maybe you can fillanother 100 bags?What do you think?Why?
40 Sure you can, because you have more than Apples apples left….300
41 So you tell your boss you have apples left, and you need 100 more bags to holdmore apples.471300
42 This time, you put the 300 apples in BLUE bags…
43 600 Now you have 200 bags that are holding apples… RED bags and BLUE bags600apples…100100
44 How many apples would you have left in your basket? More than what’s inthis basket!!!
45 171 If you thought: 471 apples minus 300 apples, you’d be correct That’s equal to apples…
46 What will you do with those 171 apples that are still in the basket? No, you can’t eat them- 171 apples willupset your stomach, besides, you have tosell them so you can buy your teachers big birthdaygifts…Can you fill another 100 bags with apples?Why?
47 Just how many bags can you fill with your 171 apples?
48 Can you think of any multiple of 3 that’s less than 171? Let’s try some…3 x 90 bags =270 applesThat’s more than 171 apples3 x 80 bags=240 applesNope, still too much
49 How can you figure out a multiple that is less than 171…Yup, it’s a great time to use thosemental math multiplication skills!!!
50 How about 3 x 503 x 50 =150That’s less than 171…You can take applesout of the basket….150
51 Let’s make 50 more bags of 3 apples each! We’ll use green bags this time!!
52 Okay, let’s review…You took out 300 apples,and put them in 100 red bags…
53 Then you took out 300 more apples, And put those in 100 blue bags…
54 100 red + 100 blue + 50 green Then you took 150 apples from the basket and put those in 50 green bags…How many bags have we used together?100 red blue + 50 green