ESTIMATION

Multiple Choice

Why is estimation important in everyday life?

• It helps us make quick decisions and avoid mistakes.

• It always gives the exact answer.

• It is only used in mathematics.

• It is not useful outside of school.

Multiple Choice

Which of the following is NOT an advantage of estimation?

• It can save time

• It can tell you whether the answer to a problem is sensible or not

• It can prevent error

• It guarantees an exact answer

Multiple Choice

Which number sentence shows the best estimate of the total number of coins?

• 350+180+40= 570

• 300+100+80= 480

• 360+140+80= 580

• 340+140+ 80 =590

Multiple Select

Select all the numbers that would be rounded up to 740 when rounding to the nearest ten.

• 736

• 737

• 738

• 739

Open Ended

Explain how rounding off works when the last digit is 4 or 5, using examples from the slides.