Math QST1

It is a way of approximately calculating an answer

• Estimating

• computing

• adding

• ordering

Which statement does not provide steps on estimating the sum/difference?

• Write the given number in column

• Order the number based on the value

• Round off the numbers to the highest place value

• Add/Subtract the rounded numbers

Seven thousand, ninety-two.

• 7,902

• 70902

• 7092

• 792

10,000,512 write the number in standard form

What is the correct series of number that is in ascending order?

• 142865   79632   137951

• 79632   137951 142865  

• 142865  137951 79632  

142,865, what is the correct expanded form of the number

• 100,000 + 14,000 + 2000 + 800 + 60 + 5

• 100,000 + 42, 000 + 800 + 60 + 5

• 100,000 + 40, 000 + 2,000 + 800 + 60 + 5

9,397 ▢ 9,937

• >

• <

• =

The number of students in Classes III, IV and V are 154, 129 and 118. Estimate the total number of students in the three classes taken together.

Estimate and Solve

• 320, 000 - 120,000 = 200, 000

• 300, 000 - 100,000 = 200,000

• 310,000 - 110,000 = 200,000

909,089 - round off to the nearest hundreds