Rounding and Estimation

What 1856 rounded to the nearest 10?

What is 1856 rounded to the nearest 100?

What is 3.141592653 rounded to 3 decimal places?

• 3.414

• 3.142

• 4.252

• 3.143

What is 3.141592653 rounded to 1 decimal place?

• 3.1

• 3.0

• 3.01

• 4.1

What is 467 rounded to one significant figure?

• 470

• 5

• 400

• 500

What is 0.53 rounded to one significant figure?

• 0

• 5

• 0.5

• 1

Estimate the value of 45x23 by rounding each number to the nearest 10

• 800

• 850

• 1000

• 1035

Work out an estimate for (9 × 11) ÷ (2.57 + 2.09)?

• 21.24

• 21

• 20

• 2