Question

hello friends.. On question is troubling me can u please solve. It's from Oxford book of class 4th. Maths
U have to add and check.

Answer 1

Answer:

274

Step-by-step explanation:

start from the ones(extreme right side of the expression) it says=

8

+7

+9

8+7 is 15. 15+9 is 24.

so, write the ones digit(4) in the box. and carry over 2 to the next side

2(carry over)

+2

+8

+5

2+2=4, 4+8=12, 12+5= 17

again write the ones digit(7) in the 2nd box and carry over 1

1(carry over)

+1

1+1= 2

so write 2 in the final box

the final answer is 274.

Now, let's re-check.

Subtract the answer with the sum of the 2nd two numbers.

ie 274-(159+87)

159+87= 246

(1) (1)(carry over one is for numbers 5,1)

159

+ 87

=246

274-246=28

274(cut 7 and 4. 4 is cut as 4-6 can't be done. 7 is cut to borrow a place or 4 so, 10 is added to 4 and we can subtract as 14 and 6= 8)(when 7 is cut, we must reduce a number by 1 so, here 7 changes into 6)

-246

= 28