# Grade 2 Mental Arithmetic Worksheet

Doorsteptutor material for IMO-Level-2 Class-7 is prepared by world's top subject experts: fully solved questions with step-by-step explanation- practice your way to success.

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## (1) Calculate Mentally

(a)

(b)

## (2) Calculate Mentally

(a)

(b)

## (3) Tick ✓ the Correct Option. Cross-Out ✕ the Incorrect Ones

(a) 365 is equal to

(b) 630 is equal to

(c) 210 is equal to

(d) 380 is equal to

## (4) Write in the Answer

(a)

(b)

(c)

(d)

## (5) Answer the Questions

(a)

(b)

(c)

(d)

## (6) Answer the Questions

(a)

(b)

(c)

(d)

## (7) Correctly Answer the Questions

(a) What should be added to 400 to make it 800?

(b) How much more is 430 than 330?

(c)What is the difference between 735 and 300?

(e) How much is 185 added to 10?

(d) How much is 370 added to 30?

## (8) Solve Mentally

(a)

(b)

(c)

(d)

## (9) Solve Mentally

(a)

(b)

(c)

(d)

## (10) Solve Mentally

(a)

(b)

(c)

(d)

## (11) Tick ✓ the Right Option

(a)

(b)

## (12) Tick ✓ the Correct Answer

(c)

(d)

## (13) Solve

(a) The local library holds 342 horror story books and 89 adventure books. How many books are in the library?

(b) Aditya had 267 stamps. He gave 65 of his stamps to his sister. How many stamps does Aditya keep?

(c) Renuka made 125 bread pizzas for her son’s birthday party. 32 were left uneaten. How many were eaten?

## (14) Answers the Questions

(a) Tonny is given Rs. 550 and Susant is given Rs. 200. Together, how much money do they have?

(b) A fisherman caught 230 fish in August and 99 fish in October. How many more fish did he catch in August than in October?

(c) Akbar bought 428 oranges. Out of those, 28 oranges are rotten. He bought 30 more oranges. How many oranges does he have now?

## Answers and Explanations

### Answer 1 (A)

Given addition result 190,

In 1

^{st}statement:

So,

In 2

^{nd}statement:

So,

In 3

^{rd}statement:

So,

Therefore, the answer is

### Answer 1 (B)

Given addition result 235,

In 1

^{st}statement:

So,

In 2

^{nd}statement:

So,

In 3

^{rd}statement:

So,

Therefore, the answer is

### Answer 2 (A)

Given addition result 375,

In 1

^{st}statement:

So,

In 2

^{nd}statement:

So,

In 3

^{rd}statement:

So,

Therefore, the answer is

### Answer 2 (B)

Given addition result 650,

In 1

^{st}statement:

So,

In 2

^{nd}statement:

So,

In 3

^{rd}statement:

So,

Therefore, the answer is

### Answer 3 (A)

Here, 365 is equal to:

Given 3 options; tick the correct option and cross-out the incorrect ones.

So,

### Answer 3 (B)

Here, 630 is equal to:

Given 3 options; tick the correct option and cross-out the incorrect ones.

So,

### Answer 3 (C)

Here, 210 is equal to:

Given 3 options; tick the correct option and cross-out the incorrect ones.

So,

### Answer 3 (D)

Here, 380 is equal to:

Given 3 options; tick the correct option and cross-out the incorrect ones.

So,

### Answer 4 (A)

In given statement,

Addition between given three numbers:

Therefore, the answer is

**380**.

### Answer 4 (B)

In given statement,

Addition between 800 and 100:

Then subtract

Therefore, the answer is

**850**.

### Answer 4 (C)

In given statement,

Addition between 500 and 450:

Then subtract

Therefore, the answer is

**820**.

### Answer 4(D)

In given statement,

Subtraction between 600 and 200:

Then addition

Therefore, the answer is

**480**.

### Answer 5 (A)

Given statement

Addition:

Therefore, the answer is

**350**.

(b)

### Answer 5 (B)

Given statement

Addition:

Therefore, the answer is

**295**.

### Answer 5 (C)

Given statement

Addition:

Therefore, the answer is

**820**.

### Answer 5 (D)

Given statement

Addition:

Therefore, the answer is

**454**.

### Answer 6 (A)

Given statement

Subtraction:

Therefore, the answer is

**230**.

### Answer 6 (B)

Given statement

Subtraction:

Therefore, the answer is

**240**.

### Answer 6 (C)

Given statement

Subtraction:

Therefore, the answer is

**132**.

### Answer 6 (D)

Given statement

Subtraction:

Therefore, the answer is

**120**.

### Answer 7 (A)

Number added to 400 to make it 800.

Write it into statement form:

Therefore,

**400**should be to 400 to make it 800.

### Answer 7 (B)

In the question, number more is 430 than 330,

Subtract 430 and 330:

Therefore,

**100**more is 430 than 330.

### Answer 7 (C)

The difference between 735 and 300,

Subtract form

Therefore, 435 is difference between 735 and 300.

### Answer 7 (D)

Given question, 370 added to 30

Addition form

Therefore, the answer is

**400**.

### Answer 7 (E)

Given question, 185 added to 10

Addition form

Therefore, the answer is

**195**.

### Answer 8 (A)

Given addition statement,

Addition:

Therefore, the answer is

**524**.

### Answer 8 (B)

Given addition statement,

Addition:

Therefore, the answer is

**327**.

### Answer 8 (C)

Given addition statement,

Addition:

Therefore, the answer is

**264**.

### Answer 8 (D)

Given addition statement,

Addition:

Therefore, the answer is

**76**.

### Answer 9 (A)

Given statement ,

Subtraction between two numbers:

Therefore, the answer is

**879**.

### Answer 9 (B)

Given statement ,

Subtraction between two numbers:

Therefore, the answer is

**670**.

### Answer 9 (C)

Given statement ,

Subtraction between two numbers:

Therefore, the answer is

**144**.

### Answer 9 (D)

Given statement ,

Subtraction between two numbers:

Therefore, the answer is

**419**.

### Answer 10 (A)

Given statement,

Addition between two numbers:

Therefore, the answer is

**418**.

### Answer 10 (B)

Given statement,

Subtraction between two numbers:

Therefore, the answer is

**609**.

### Answer 10 (C)

Given statement,

Addition between two numbers:

Therefore, the answer is

**263**.

### Answer 10 (D)

Given statement,

Subtraction between two numbers:

Therefore, the answer is

**409**.

### Answer 11 (A)

In given statement,

Solve it in, first subtraction

Then addition

Therefore, the correct option is .

### Answer 11 (B)

In given statement,

Solve it in, addition between 1

^{st}two numbers

Then addition

Therefore, the correct option is .

### Answer 12 (A)

In given statement,

Addition between given numbers:

Therefore, the correct option is

### Answer 12(B)

In given statement,

Solve it in, first subtraction

Then addition

Therefore, the correct option is .

### Answer 13 (A)

Horror story books

Adventure books

Total books

Therefore,

**431 books**are in the library.

### Answer 13 (B)

Aditya had stamps

He gave 65 of his stamps to his sister.

So, he has stamps

Therefore, Aditya keep

**202 stamps**.

### Answer 13 (C)

Renuka made bread pizzas for her son’s birthday party.

Total pizza made

Left uneaten pizza

So, eaten pizza

Therefore, 93 pizzas were eaten.

### Answer 14 (A)

Tonny

Susant

Together money

Therefore, they have

**Rs. 750**altogether.

### Answer 14 (B)

A fisherman caught fish,

In August

In October

Difference

Therefore, he catch

**131 more fish**in august than in October.

**Answer 14 (c)**

Akbar bought oranges

Rotten oranges

Remaining oranges

He bought 30 more oranges.

Now, he had oranges

Therefore, he has

**430 oranges**now.