Estimation

Q. Which of the following bags is the heaviest?

1. Yellow bag
2. Red bag
3. Blue bag
4. All the 3 bags are equal in weight.

Q. The chain given below is about 5 centimetres long. Mark the option with the pencil that is about 10 centimetres long.

1. B
2. C
3. A
4. D

Q. One box can hold 8 chalks. Two boxes can hold nearly ___ chalks.

1. 10
2. 20
3. 8
4. 25

Q. Round off the number of balloons in each container to the nearest 100, 000 and choose the correct option.

$\begin{array}{cc}\text{Container}& \text{Number of balloons}\\ \text{A}& 135,092\\ \text{B}& 176,177\\ \text{C}& 110,321\end{array}$

1. Number of balloons in container A = Number of balloons in container C
2. Number of balloons in container B = Number of balloons in container C
   
3. All of the above
4. Number of balloons in container A = Number of balloons in container B

Q. The chain is about 10 centimetres long. Choose the option which is the best estimate for the length of the crayon.

1. 8 centimetres
2. 13 centimetres
3. 5 centimetres
4. 3 centimetres

Q. Round off $10,964$ to the nearest $10,000$ and choose the correct option.

1. $13,000$
2. $12,000$
3. $12,600$
4. $10,000$

Q. At a restaurant it takes about 11 minutes to complete one order. Rakesh placed 3 such orders. If he ordered the food at 11:15 AM At about what time his order will come?

1. 11:40 AM
2. 11:45 AM
3. 11:50 AM
4. 12:00 PM

Q. 4, 982 rounded off to the nearest hundred is .

1. 4, 980
2. 5, 000
3. 4, 900
4. 4, 000

Q. Radha is 125 cm tall. Shyam is 150 cm tall. So Radha is shorter by three quarters of a metre than Shyam.

1. True
2. False

Q. Which of the following bags is the heaviest?

1. All the 3 bags are equal in weight.
2. Red bag
3. Yellow bag
4. Blue bag

Q. 6 students arrange 52 chairs each. About how many chairs are arranged in total?

1. 200
2. 300
3. 400
4. 500

Q. While rounding off the number to the nearest hundred, we generally look at the ____________ of the number.

1. zeros
2. tens digit
3. ones digit
4. hundreds digit

Q. Match the multiplication with their best estimates.

1. 9 x 3
2. 31 x 5
3. 19 x 7
4. 150
5. 140
6. 30

Q. Estimate 19 to its closest ten.

1. 10
2. 18
3. 15
4. 20

Q. Tharun had ₹150. He buys 2 notebooks and 1 geometry box for ₹96. Find how much money is left with him (round off to the nearest tens)?

1. ₹50
2. ₹40
3. ₹90
4. ₹100

Q. $\text{Select the length of the}envelope\text{.}$

1. $\frac{5}{10}units$
2. $\frac{3}{10}units$
3. $\frac{4}{10}units$
4. $\frac{2}{10}units$

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The total length of the fabric is 6, 260 cm.
What is the length of the fabric left if 100 cm is cut from both the ends?

1. 6210 cm
2. 6000 cm
3. 6060 cm
4. 6150 cm

Q. $\text{Select the length of the}envelope\text{.}$

1. $\frac{2}{10}units$
2. $\frac{5}{10}units$
3. $\frac{3}{10}units$
4. $\frac{4}{10}units$

Q. 82, 823 rounded off to the nearest 1000 is .

1. 82, 800
2. 82, 000
3. 83, 000
4. 82, 900

Q. Which of the following bags is the heaviest?

1. Blue bag
2. Yellow bag
3. Red bag
4. All the 3 bags are equal in weight.

Q. When rounding off to the nearest 10, if the number we are rounding off is followed by 5, 6, 7, 8, or 9, we round _____ the number.

1. down
   
2. left
3. right
4. up
   

Q. Round off to nearest hundreds: The given number is $1,78,762$

1. $1,78,760$
2. $1,78,700$
3. $1,78,800$
4. $17,800$

Q. Tharun had ₹150. He buys 2 notebooks and 1 geometry box for ₹96. Find how much money is left with him (round off to the nearest tens)?

1. Rs. 50
2. Rs. 40
3. Rs. 90
4. Rs. 100

Q. Which of the given arrangements is not the correct way of packing 30 books?

1. 3 boxes with 10 books each
2. 5 boxes with 6 books each
3. 6 boxes with 4 books each
4. 10 boxes with 3 books each

Q. Estimate 32 to the nearest tens.

1. 32