Mental Math

Q.

Simplify the following mathematical expression:

$12$ of $9-\{13+2(7+2-1\left)\right\}$

Q.

Evaluate:$13÷\left[\right(-2)+1]$

Q. Evaluate the expression on the Christmas board.

1. 100, 099
2. 100, 099
3. 100, 990
4. 100, 009

Q. Find the value of $2300+1900$.

1. $4200$
2. $3200$
3. $2900$

Q.

Simplify the following mathematical expression:

$\left(12+3\times 2\right)-\left(16-5\times 2\right)$

Q. Sam's mother asked him to add up the amount of money that she's going to put in the bank. Help him do it.

1. $3, 200
2. $3, 600
3. $3, 400
4. $2, 400

Q. The value of $5600+1400$ is

1. $7000$
2. $6300$
3. $8000$

Q. Match the pairs correctly.

1. $9000$
2. $11000$
3. $13000$

Q. A person ordered an item on an online store. The bill for that came like this:What is the total amount he needs to pay for the item?

1. $132
2. $122
3. $130
4. $160

Q. $36003+825+1997=$

1. $38825$
2. $36787$
3. $48825$

Q. Calculate mentally and match the pairs.

1. $1450+650$
2. $1890+310$
3. $999+1001$
4. $2100$
5. $2200$
6. $2000$

Q. Can you solve $1598+389+1413$ without using pen and paper and select the correct answer?

1. $3440$
2. $3400$
3. $3500$

Q.

A number pattern is given by the rule $T=60n$. Write down the $100th$term

Q.

Simplify the following :

$12-(7+4)$

Q. Kelly is playing with numbers. Help him find the missing numbers A, B, C, D, and E.

1. A = 4; B = 0; C = 2; D = 0; E = 3
2. A = 4; B = 0; C = 2; D = 0; E = 0
3. A = 4; B = 0; C = 0; D = 0; E = 3
4. A = 4; B = 0; C = 2; D = 7; E = 3

Q. Which of the following numbers makes the equation true?
$(19-10)+5=(13-$ __ $)+6$

1. $5$
2. $8$
3. $7$
4. $9$

Q.

Group two numbers suitably and add the following.

$1956+29759+2143+7256+144+344+241+2157$