Round off the following numbers to the nearest $10$.

$114$

What will come in place of question marks in the given questions?

What will come in place of question marks in the given questions?

Estimate the product by rounding to the nearest hundreds.

$407\times 231$

Estimate the product by rounding to the nearest hundreds.

$327\times 816$

$5734-1523=4211$

Answer, with a Yes or a No. Estimate. Do not calculate. Ajay buys a box that can hold $100$ marbles. He has $52$ grey marbles, $26$ red marbles and $29$ black marbles. Will all the marbles fit in the box? How many marbles will be left?

Estimate the product to the nearest ten by rounding the first factor up and the second factor down.

$77\times 28$

Answer, with a Yes or a No. Estimate. Do not calculate. Arun's car has enough petrol to go $200 \mathrm{km}$. It goes $98 \mathrm{km}$ on Monday. If he plans to go $58 \mathrm{km}$ on Tuesday, will he need more petrol?

Check the answer using the only estimation. Tick the answer if it seems reasonable and cross if it is not.

$2086+965=3051$

Estimate the product to the nearest ten by rounding the first factor up and the second factor down.

$23\times 32$

Round each factor with more than one digit to the nearest ten. Then estimate the product.

$75\times 46$

Check the answer using only estimation.

Tick the answer if it seems reasonable and cross if it is not:

$809-654=255$

Round each factor with more than one digit to the nearest ten. Then estimate the product.

$26\times 29$

Answer, with a Yes or a No. Estimate. Do not calculate.

Amarjeet wants to buy $1 \mathrm{kg}$ of apples for $₹35$ and bananas for $₹17$. She has $₹50$. Does she have enough money with her?

Check the answer using the only estimation. Tick the answer if it seems reasonable and cross if it is not.

$1846+4299=8745$

Estimate the product to the nearest ten by rounding the first factor up and the second factor down.

$47\times 88$

Estimate the product to the nearest ten by rounding the first factor up and the second factor down.

$35\times 65$

Check the answer using the only estimation. Tick the answer if it seems reasonable and the cross if it is not.

$451+890+74=3,415$

Answer, with a Yes or a No. Estimate. Do not calculate. Sunita has $₹500$. She wants to buy an encyclopedia for $₹272$ and a story book for $₹185$. Does she have enough money?