MATH GAME / ESTIMATING

MADE BY KATHERINE

CHAPTER 4

InstructionsNext:

INSTRUCTIONS INTRODUCTION

This game is a practice to round off. All you have to do is read the description and answer the question correctly.

DEFINITION OF ROUNDING

ROUNDING MEANS REDUCING THE DIGITS IN A NUMBER WHILE TRYING TO KEEP ITS VALUE SIMILAR. 

THE RESULT IS LESS ACCURATE, BUT EASIER TO USE. 

THIS IS THE COMMON METHOD

* DECIDE WHICH IS THE LAST DIGIT TO KEEP* INCREASE IT BY 1 IF THE NEXT DIGIT IS 5 OR MORE (THIS IS CALLED ROUNDING UP)* LEAVE IT THE SAME IF THE NEXT DIGIT IS LESS THAN 5 (THIS IS CALLED ROUNDING DOWN)

EXAMPLE: 243 ROUNDED TO THE NEAREST TEN IS 240 (BECAUSE 3 IS LESS THAN 5)

MATHSISFUN.COMBack:

QUESTION 1 Round off to nearest 10

598

580 590

610 600

CORRECT

GOOD JOB!

Next:

WRONG

590…591…592…593…594…595…596…597…598 … 599… 600

Back: Next:

8 2

2 is smaller that 8 so we have to go with 600

QUESTION 2 Round off to nearest 100 decimal

19.5857287

19.59 19.586

19.588 19.685

CORRECT

GOOD JOB!

Next:

WRONG

Back: Next:

Try again

QUESTION 3 Round off to nearest 100th number

13’484

13’490 13’584

13’500 13’400

CORRECT

GOOD JOB!

Next:

WRONG

Back: Next:

Try again

QUESTION 4 Round off to nearest 1000th number

762’342

763’000 763’342

762’000 762’342

CORRECT

GOOD JOB!

Next:

WRONG

Back: Next:

Try again

QUESTION 5 Round off to nearest 1th number

13.873

14.873 13

13.9 14

CORRECT

GOOD JOB!

Next:

WRONG

Back: Next:

Try again

QUESTION 6 Round off to nearest 5th number

36

40 30

35 45

CORRECT

GOOD JOB!

Next:

WRONG

Back: Next:

Try again

QUESTION 7Round off to nearest 10’000th number

762’342

770’000 763’000

760’000 763’000

CORRECT

GOOD JOB!

Next:

WRONG

Back: Next:

Try again

QUESTION 8Round off to nearest 50th number

89’640

89’600 89’700

89’650 89’645

CORRECT

GOOD JOB!

Next:

WRONG

Back: Next:

Try again

QUESTION 9 Round off to nearest 100th Decimal

1347.972

1348.0 1347.96

1347.98 1347.97

CORRECT

GOOD JOB!

Next:

WRONG

Back: Next:

Try again

QUESTION 10Round off to nearest 1000th Decimal

.76261

.76361 .762

.763 .761

CORRECT

GOOD JOB!

Next:

WRONG

Back: Next:

Try again

END

THANK YOU FOR PLAYING!

I HOPE YOU LIKED IT