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- our learning target today is I can add
- and subtract three-digit numbers using
- place value your success criteria is
- that well know I am successful when I
- can solve real-life addition and
- subtraction problems we are going to
- continue our work in solving addition
- and subtraction story problems or real
- life problems and this is really
- important because in real life you're
- not always given an equation but rather
- real-life situations in which you have
- to figure out what the equation is you
- need to solve and then solve it so right
- now be thinking in your head what are
- some real-life situations where you
- would be adding and subtracting and
- using the skills that you're learning
- right now think about when you're saving
- for something or when you're going to
- the store to buy something those are all
- really great examples of reasons why you
- would need to use addition and
- subtraction so because this is a second
- lesson I am going to give you a problem
- and I want you to try it on your own
- first I want you to spa's the video grab
- a sheet of paper read through this
- problem very carefully and then solve it
- and then start the video again and we
- can go through it together
- pause the video okay well I am thinking
- this problem aloud I want you to go
- through your work and see if you did it
- the same way I did and if you did great
- and if you didn't figure out what it is
- you can do different next time to make
- sure that you you able you're able to
- solve the story problem correctly okay
- Joe passes out free tickets to a show he
- passes out 516 at the library 257 at the
- park and 137 at the store
- how many more tickets did he pass out at
- the library than the store hmm when I
- read that problem I noticed something
- there are three numbers in this problem
- so now I need to go back and really
- think carefully what is this problem
- asking me how many more tickets did he
- pass out at the library then it's a
- store oh I think this 259 tickets at the
- park is X
- your information I don't need that this
- question is asking me just about the
- library and the store and in fact it
- says how many more tickets did he pass
- out at the library than the store and I
- notice that it it has this van how many
- more than so I know I am comparing how
- many tickets he sold at the library than
- the store and therefore I need a
- comparison bar if I want to be
- successful I'm going to build that
- comparison bar even if I think I know
- the operation the comparison bar helps
- me visualize what's missing and what I
- need to do to solve so I know that
- there's 516 at the library and 137 at
- the store so I know which one gets the
- big bar this question is asking me to
- figure out the more than or less than
- and we know the more than or less than
- always goes in the Oval because it
- didn't it's not asking me how many were
- at the store and it's not asking me how
- many are at the library is asking me how
- many more than or less than and that is
- always the oval that's the difference
- so I also know that I'm missing a part
- because I'm not missing the big bar and
- I also know that I have to have a
- smaller number for there to be how many
- more I would have need to Joe would have
- need to pass out at the store it
- couldn't be a bigger number because then
- he would pass out more at the store than
- all to get then at the library and that
- doesn't make sense so I can't add I need
- to subtract ok I've lined at my place
- values and just like we always do I'll
- start in the ones place six minus seven
- I can't do it there's more on the floor
- I will take a ten that gives me zero
- tens and sixteen one so I can subtract
- seven that gives me nine now I need to
- go to the tens place zero minus three I
- cannot do it I need to go next door take
- a hundred when I regroup it it becomes
- ten tens one 100 is equal to 10 tens 10
- minus the three tens I already have is
- seven tens and now I just need to
- subtract my hundreds place four
- this one is three 100's so 379 is how
- many more tickets Joe passed out at the
- library than the store well I know that
- we need to check our work and so I also
- know if I put these two parts together I
- should end up at 516 so if I add the
- parts back thinking about the math
- Mountain and the relationship between
- addition and subtraction I'm going to
- put these two parts together and I
- should get the total of 516 be so nine
- plus seven is 16 that gives me a new 10
- 10 plus 3 that should be easy that's a
- 10 plus 1 more makes 11 I have a new 100
- so 3 plus 1 plus 1 is 5 516 yep my
- answer is correct if there were 379 more
- tickets passed out at the store it would
- be the same 516 as at the library all
- right your success criteria was I will
- know I am successful when I can solve
- real-life addition and subtraction
- problems here is your math to do list
- watch the tutorial video in Google
- classroom if you need it it is not
- required complete the practice pages in
- C saw those are required and then one
- assignment in I know accom have fun
-
our learning target today is I can add
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