Guess and Check
you are solving a problem, sometimes, it is a whole lot easier to guess the answer to the
problem and then check it, or to figure out the problem by knowing that the answer is
going to be around that. While you are guessing and checking, you are going to be
using the word ABOUT a whole lot, so if you see the word ABOUT, you know that it is going
to be around that or ABOUT that. This web site makes it even easier to make it easy!!
In other words that means that it makes it easier to guess the answer. So
let's go turn problem solving EASY!!!!
need to know HOW TO guess and check your answer. That is EASY (there's that word
again, EASY!!!). OK, here is an example problem, DON'T WORRY, I am going to help you
You have 4
(four) pizzas that are divided into 12 pieces each. You have 23 kids that want
pizza. How many pieces of pizza does each of the kids have?
First you know that
you have four pizza's that have about 10 pieces of pizza in each. As you know
4x10=40. So you have about 40 pieces of pizza. You have about 20 kids that you
need to feed pizza. 40 divided by 20=2. You know that each kid may have about 2
pieces of pizza.
Now that you know
that each child will have about 2 pieces of pizza, you have to check your answer.
4x12=48. You have 48 pieces of pizza. 48 divided by 23 (because you have 23
kids)=2 remainder of 2 pieces of pizza. Each child will be able to eat 2 pieces of
In this problem, using the Guess and Check strategy turned out to be the correct answer,
but I'll have you know that there are some problems that when you use the Guess and Check
strategy, the answer is different then what it would be if you actually solved it without
rounding. Was that easy? Of course it was. Do you think you can handle a
problem by yourself? I know that you can. Don't freak out, you can solve this
problem using the Guess and Check strategy, but then you can check your answer!!
This one will be a little harder though. Here goes nothing!!
and killer whales perform at Sea Circus. There are 13 more dolphins than killer
whales. How many of each animal are there?
For the answer,
click ANSWER down below.
Have you learned a lot about Guess
and Check? I sure have. I hope that you learned a lot and that you won't stop
learning here, because there are bigger and better and even harder problems that you can
solve using the strategy "Guess and Check"!! This is just the beginning of
your math world, but you can go to the other Hyper Links on our homepage and learn about
Solving a Simpler problem and Looking for a pattern! Yup! We've got 'em all,
so go on back to the homepage, click on one other Hyper Link and discover another
"WONDERFUL WORLD OF MATH!!!"
First of all, you have to make a
guess. How bout 15 dolphins +10 killer whales=25. No no, there has to be 13
more dolphins, there is only 5 between there. Let's see how about 20 dolphins+5
killer whales. No, between those is 15, so I am much closer, but not close enough!
I bet 19 dolphins+9 killer whales will do the trick!! Yes, yes that is
correct, we have solved this problem by using GUESS AND CHECK!! We did it!!!
There are 19 dolphins and 6 killer whales performing at the Sea Circus!!