Question

Mental Maths : 1. Add 7 sets of 8 to 144 2. 2570 - _____ = 570 3. Which is bigger? 21 tens or 214 4. How many cm in 5 metres? 5. How many hours in 7 days? 6. From 11 nines take away 3 twelves 7. How many thirteens in 13,000? 8. (20 x 50) - 1000 = ______ 9. What number is 90 less than 170? 10. (1000 ÷ 100) x 20 = 11. 25 kg 10 gm = ____________ gm 12. What number multiplied by itself gives 100? 13. How many seconds in 4 hours? 14. Find the product of 40 and 40 15. In 456820, the digit 5 stands for _____.

Answer 1

Answer:

2nd ka 2000

3rd ka214

4th ka 500

5th ka 168 hours

7th ka 1

8th ka 0

9th ka 80

10th ka 200

11th ka 2510

12th ka 10 * 10

13th ka 2400 sec.

14th ka 1600

15th ka ten thousand