Mental maths is a method of solving math problems by using mental calculations rather than relying on pencil and paper or a calculator. Mental maths is an important skill that can help students to become more confident and efficient in their math studies.

Mental maths for class 4 students can include a range of activities and exercises that help them to develop their mental math skills. These may include:

- Counting and basic arithmetic: Students can practice counting and basic arithmetic such as addition, subtraction, multiplication, and division using mental math techniques.
- Mental math strategies: Students can learn and practice mental math strategies such as using place value, estimation, and rounding to solve problems more efficiently.
- Word problems: Students can practice solving word problems using mental math techniques to understand the problem and find a solution.
- Timed drills: Students can practice mental math skills by completing timed drills or challenges that test their speed and accuracy.

By practicing mental math regularly, class 4 students can improve their math skills, build their confidence, and become more efficient problem-solvers.

## Here are some examples of mental math exercises that class 4 students might practice:

- Adding two-digit numbers: Students can practice adding two-digit numbers such as 23 + 45 in their heads, using mental math strategies like place value and rounding to find the answer quickly.
- Multiplying by 10: Students can practice multiplying numbers by 10 using mental math. For example, to find the product of 6 and 10, students could think “6 groups of 10 is 60.”
- Multiplying by 5: Students can practice multiplying numbers by 5 using mental math. For example, to find the product of 4 and 5, students could think “4 groups of 5 is 20.”
- Dividing by 10: Students can practice dividing numbers by 10 using mental math. For example, to find the quotient of 90 divided by 10, students could think “90 divided into 10 groups is 9.”
- Word problems: Students can practice solving word problems using mental math. For example, “If there are 3 apples and you add 2 more, how many apples do you have in total?” Students could think “3 plus 2 is 5,” and find the answer using mental math.

### Here are some mental math questions that class 4 students might practice:

- What is the sum of 25 and 36?
- What is the product of 7 and 8?
- What is the quotient of 50 divided by 10?
- If there are 4 apples and you add 3 more, how many apples do you have in total?
- What is the difference between 78 and 32?
- What is the product of 4 and 5?
- If there are 10 cookies and you eat 2, how many cookies do you have left?
- What is the quotient of 90 divided by 10?
- If there are 3 pencils and you add 4 more, how many pencils do you have in total?
- What is the sum of 25 and 36?

### Answer

- The sum of 25 and 36 is 61.
- The product of 7 and 8 is 56.
- The quotient of 50 divided by 10 is 5.
- If there are 4 apples and you add 3 more, you have a total of 7 apples.
- The difference between 78 and 32 is 46.
- The product of 4 and 5 is 20.
- If there are 10 cookies and you eat 2, you have 8 cookies left.
- The quotient of 90 divided by 10 is 9.
- If there are 3 pencils and you add 4 more, you have a total of 7 pencils.
- The sum of 25 and 36 is 61.