Advertisements
Advertisements
प्रश्न
Ask your friend rite — W down your A age. dd 5 to it. Multiply the sum by 2. Subtract 10 from it. Next, divide it by 2. What do you get?
Advertisements
उत्तर
Let the age of my friend be 9 years.
Adding 5 to it, we get
9 + 5 = 14
Multiplying this sum by 2, we get
14 × 2 = 28
Subtracting 10 from 28, we get
28 − 10 = 18
Dividing it by 2, we get
18 ÷ 2 = 9
The answer is the same as my friend’s age.
APPEARS IN
संबंधित प्रश्न
Circle the multiples of 9 (by using casting out nine).
9443
Circle the multiples of 9 (by using casting out nine).
1008
Circle the correct subtraction fact (by using casting out nine).
7420 − 3625 = 3795
Circle the correct addition fact (by using casting out nine).
4355 + 5369 = 9724
Circle the correct addition fact (by using casting out nine).
6023 + 3203 = 9220
Circle the correct multiplication fact (by using method of casting out nine).
723 × 24 = 17508
Complete the following sequence.
| A100 | C300 | E500 |
Complete the following sequence.
9 × 6 = 54
9 × 66 = 594
9 × 666 = 5994
9 × 6666 = 5 ______ 4
9 × 666666 = _____________
Take any number. Now multiply it by 2, 3, 4 ............... at every step. Also, add 3 to it at each step. Look at the difference in the answer. Is it the same at every step?

What if someone gives you to add ten numbers together?

Did you notice some pattern in the answers?
