Question

plz answer these for my little sister even i don't know the answer​

Answer 1

Answer:

Q1: 805, 580, 850, 508= 5+8+0= 13

Q2: 849×102= 86,598 (Just simply do multiply)

Q3: Not divisible by 6 (Check by Divisibility of 6, by seeing that the number is divisible by 2 or 3)

$2 \frac{1}{4} - \frac{7}{8} = 4 \times 2 + 1 = 9 = \frac{9}{4} \\ \frac{9}{4} - \frac{7}{8} = lcm \: of \: 4 \: and \: 8$

Ans 4: Here, in this you can see, first simply mixed fraction to improper fraction and then to subtract find the lcm of the given number.

Q5: Sorry, but I dont know.