CBSE Class 5 Mathematics Mental Mathematics Worksheet Set B

1. 5 × 10,000 + 4 × 100 + 8 = ____________

2. Insert >, < or = sign: Triple of 30 ____________ Half of 90

3. The sum of two numbers is 7000. If one of the number is 5000 then the other number is _____________.

4. The product of two odd numbers is always an ____________ number.

5. 764 + 1236 = ____________ hundreds.

6. Complete the pattern: 1100, 1090, _______ ________ _________

Solve the puzzles given below to know the answer:

1. I am smaller than 10 but greater than 6. I am an even number. _________________________

2. I am the smallest 4 – digit number that remains the same even when written in the reverse order. What number am I? _________________________

3. I am between 375 and 380. I am double of 189. What number am I? _________________________

4. Take the number 14, then subtract 4, and divide by 2 get me. I am a 1 – digit number. What number am I? _________________________

5. I am greater than 100 but smaller than 110. I am a product. One of my factor is the largest 1 – digit number. What number am I?

1. Reciprocal of 4(1/2) is ________________.

2. = 3(2/5) ÷ 3(2/5) =  _________.

3. The reciprocal of a whole number is always a _____________ fraction.

4. = 20 + 8 + 4/10 + 6/100 = __________.

5. 72.12 × 100 = ___________.

6. The decimal form of 239/10 is ____________.

7. The product of 42.7 and 9.248 will have _____________ decimal places.

8. 1.23 expressed as a mixed number is __________________.

9. 81508 rounded off to nearest thousand is _______________.

10. A ray has no __________________ length.

1. The number which is only whole number but not a natural number is _________________

2. The HCF of two even consecutive numbers is _______________.

3. The smallest factor of 15 is ________________.

4. The sum of smallest natural number and smallest whole number is ___________________

5. (18 + 9) + 4 = 18 + (9 + ______)

6. 3/11 × __________ = 1

7. The numeral for twenty five million eight is _________________.

8. 3/7 of a week is ______________ days.

9. 6.25 × 100 = ________________.

10. 4638 × 25 × 4 = ________________.

1. Reciprocal of 5/3 is ______________.

2. 1 Kg = _______________ g.

3. A number which has only two factors, one and number itself, is called a ______________ number.

4. Largest 2 – digit number divisible by 3 is _________________.

5. There are _______________ halves in 12(1/2)

6. 20 +  3/10 + 6/100 = _______________

7. The decimal form of 273/10 is ___________________.

8. The place value of 8 in 9.38 is ___________________.

9. The decimal number four–thousandths has ___________ decimal places.

10. 4000 + 800 + 30 + 7 = _________________

1. A quadrilateral has ________________ sides and ___________ angles.

2. The sum of all angles of a triangle is ______________.

3. The measure of a right angle is __________________.

4. A line segment PQ is written as ___________________.

5. A line has __________________ length.

6. 607.3 × 100 = ______________.

7. The largest chord of the circle is _________________.

8. No. of lines drawn passing through two given points is ______________.

9. The line joining any two points on the circumference of circle is called __________________

10. A number is divisible by 6 if it is divisible by _______ and _______ both.

1. 5 days = ________________ hours.

2. 1 Km = ____________________ metres.

3. 3/7 and 4/7 are _______________ fractions.

4. The decimal number for 9/10 + 3/1000 is ____________________.

5. Seventy hundredths is written as ___________________.

6. 30,000 + 4000 + 70 + 9 = ___________________.

7. 4927 × 1000 = ________________

8. 3572 rounded to nearest thousand is ___________________.

9. 8 × 3273 × 125 = __________________

10. Prime number between 90 and 100 is _______________________.

1. __________________ is and the name for multiplicative inverse.

2. __________________ is an example of co–prime numbers.

3. The multiplicative inverse of 3/4 is ________________.

4. The smallest composite number of two digits is ______________.

5. _______________ is a multiple of both 7 and 13.

6. The lowest term for 21/45 is ________________.

7. The number 590 less than 5900 is ___________________.

8. Adding one – fifth to three fifths gives _________________.

9. 125 × 6934 × 8 = _________________

10. An equivalent fraction for 3/7 is _________________