Rounding and Estimation
Math ⇒ Number and Operations
Rounding and Estimation starts at 6 and continues till grade 12.
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See sample questions for grade 12
A company produced 12,345 units in January and 15,678 units in February. Estimate the total production by rounding each value to the nearest hundred.
A measurement is recorded as 0.05678 meters. What is this value rounded to three significant figures?
A scientist records a value as 6.023 × 1023. If this value is rounded to three significant figures, what is the result?
A student estimates the product of 198 and 52 by rounding both numbers to the nearest ten. What is the estimated product?
A value is rounded to 3.6 when rounded to the nearest tenth. What is the range of possible original values?
Describe the process for rounding a number to a specified number of significant figures.
Estimate the sum of 4,987 and 3,214 by rounding each number to the nearest thousand before adding.
Estimate the value of 3,456 ÷ 98 by rounding both numbers to the nearest hundred.
Explain the difference between rounding and truncating a number.
Explain why estimation is important in real-life problem solving.
Explain why rounding errors can accumulate in repeated calculations.
If a number is rounded to the nearest thousand and the result is 17,000, what is the smallest possible value the original number could have been?
If a value is rounded to the nearest hundred and the result is 2,800, what is the largest possible original value?
Round 0.0004567 to two significant figures.
Round 0.004567 to three decimal places.
Round 0.9999 to two decimal places.
Round 1,234,567 to the nearest million.
Round 7,499 to the nearest thousand.
