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Estimating multiplication problems

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Presentation on theme: "Estimating multiplication problems"— Presentation transcript:

1 Estimating multiplication problems
Please read the instructions first!!

2 How to play This game is best for two or even better two pairs of players: Teams A and B: Take turns to estimate the multiplication problems and click on the correct estimate. You need to make a close guess, and do not have to work out the exact answer. You must explain to the other team why you think you are correct and how you worked it out.

3 Team A. Look at the multiplication problem and the three estimates
Team A! Look at the multiplication problem and the three estimates. Click the one you think is nearest. More than 500 Between 400 and 500 More than 600 23 x 23 Explain how you worked it out!

4 You guessed well !!!! 23 x 23 = 529 Now it is time for the Team B to have a go. Please click on the foot for the next problem….

5 OOOPS! Please try again. Click on the inch to go back to the question.

6 Here is the second problem for team B this time…
Between 850 and 900? Between 800 and 850? Between 750 and 800? Click on your estimate! 58 x 15 How did you work it out? Tell the other team!

7 You guessed well !!!! 58 x 15 = 870 Now it is time for the Team A to have another go. Please click on the knotted rope for the next problem….

8 Sorry! Please try again. Click on the balance to go back to the question.

9 Here comes the third estimate for Team A!
Between 1750 and 2000? Between 2000 and 2499? More than 2500? 75x28

10 That’s a brilliant estimate
That’s a brilliant estimate !!!! 75x28 = Which is between 2000 and 2499! Now it is time for team B to have a go. Please click on the armspan for the next question….

11 Please have another go at estimating
Please have another go at estimating. Click on the water clock to go back to the question.

12 Team B: please try estimate problem number four!
Between 400 and 450 Between 450 and 500 More than 500 75 x 28

13 Well done! You are getting good at this! 75 x 28 = 476
The soldier’s step will take Team A to the next estimate.

14 Please have another guess
Please have another guess! The spoon will return you to the problem page

15 Now the fifth estimate is for team A
Now the fifth estimate is for team A! We are trying to make them a bit more difficult each time. 14 x 57 Between 750 and 800 Between 800 and 850 Between 850 and 900

16 Just right! A brilliant guess! 14 x 57 =798
Team B must whizz onto the hour glass and go to the next problem!

17 Go on! Have another guess! The hand span is waiting to take you back!

18 Number six is here to tax team B’s brains and make their cells buzz!
Between 950 and 999 Between 1000 and 1050 Between 1050 and 1100 57 x 19 A brain cell

19 You are stars! 57 x 19 = 1083 is the correct answer!
Team A must jump in the bucket to be beamed to the next problem!

20 AAAAAAArgh!!!! Error! Error!
Please return to the question by using the bowl.

21 Are you ready team A for problem number seven?
Between 400 and 450 Between 450 and 500 Between 500 and 550 13 x 37 Who am I?

22 Correct! Well done! Whizzo! 13 x 37=481
Now it is time for team B to press on the candle clock (make sure you don’t get burned!) to discover their next problem!

23 Oh dear. I’m sure you didn’t mean to press that one
Oh dear! I’m sure you didn’t mean to press that one. Please put the thimble on to return to the problem What can a thimble be used to measure? What is a thimble really for? Where can you still find them? Who still uses them?

24 The little problem for Team B!!
Between 999 and 1299 Between 1299 and 1600 Between 1601 and 1750 We are good at multiplying! 83 x 19

25 You are so right!! 83 x 19 = 1577 We are good at multiplying!
You are now ready to play “Estimating Connect Four” a game of skill, ingenuity and your knowledge of multiplying big numbers! Team B need to get close to the bacteria to find their last problem! We are good at multiplying!

26 Oh no! You have made a slip at the last moment!
Don’t despair! Take the cubit back to the problem and try again. Soon you will multiply as well as us!!

27 The last problem for Team A!!
36 x 44 We hope you have kept on explaining to each other how you worked out your estimate!!! Between 1300 and 1450 Between 1451 and 1550 Between 1551 and 1999

28 Wow! You’re right! 36 x 44 = 1584 Well done team A! You are now ready to play “Estimating Connect Four” a game of skill, ingenuity and your knowledge of multiplying big numbers! Here are two stars! You can pin them on and tell team B to click on the horncup to get their last problem.

29 EEEEEEEEK! We are sure that was a slip of the finger.
Weigh your mouse in the Egyptian scales to return to the problem.

30 Are you ready for your last brain taxing problem?
Less than 1200 Between 1201 and 1250 More than 1250

31 73 x 17 = 1241 Well done team B! You are now ready to play “Estimating Connect Four” a game of skill, ingenuity and your knowledge of multiplying big numbers! Here are two stars! You can pin them on and clicking them will take you back to the beginning of the game!!

32 Sorry you have to try again!
The Builder’s rod will take you back. Good luck next time!


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