Question

Hey! I have something more interesting for you. Ma told me, there are things to eat in some rooms. Help me find those room numbers. Mark them in my home. See what you get!



E.g., 47 = 37 + 10

37 + 9 = $\boxed{{}_{}{}^{}}$

62 − 30 = $\boxed{{}_{}{}^{}}$

$\boxed{{}_{}{}^{}}$ = 46 + 28

$\boxed{{}_{}{}^{}}$ = 87 − 14

62 − $\boxed{{}_{}{}^{}}$ = 43

36 = $\boxed{{}_{}{}^{}}$ − 8

45 + $\boxed{{}_{}{}^{}}$ = 99

43 + $\boxed{{}_{}{}^{}}$ = 74

$\boxed{{}_{}{}^{}}$ + 26 = 75

100 = $\boxed{{}_{}{}^{}}$ + 50

$\boxed{{}_{}{}^{}}$ − 1 = 1

57 − $\boxed{{}_{}{}^{}}$ = 20

Answer 1

(a)
37 + 9 = 46
Yes, there is a shortcut method to do this. We will first add 37 and 10 and then subtract 1 from the answer.
37 + 10 = 47
Now,
47 − 1 = 46

(b)
We will first subtract 10 from 62.
62 − 10 = 52
We will now subtract 10 from 52.
52 − 10 = 42
We will finally subtract 10 from 42 to get 32 as the answer.
42 − 10 = 32
Thus,
62 − 30 = 32

(c)
We know
46 + 20 = 66
We will add 8 to get the final answer.
66 + 8 = 74
So,
74 = 46 + 28

(d)
We will first subtract 10 from 87.
87 − 10 = 77
We will now subtract 4 from 77 and get 73.
So,
87 − 14 = 73

(e) We will first subtract 10 from 62.
62 − 10 = 52
We will now subtract 9 from 52.
52 − 9 = 43
So,
62 − 19 = 43

(f) 36 = 44 − 8

(g) We add 50 to 45.
45 + 50 = 95
On adding 4 to 95, we get 99.
Now,
95 + 4 = 99
So,
45 + 54 = 99

(h) We will first add 30 to 43.
43 + 30 = 73
We will now add 1 to 73.
43 + 31 = 74

(i) We know
40 + 26 = 66
Now, we will add 9 to 66.
35 + 40 = 75

(j) 50 + 50 = 100

(k) We will subtract 1 from 2.
2 − 1 = 1

(l) We will first subtract 30 from 57.
57 − 30 = 27
We will now subtract 7 from 27.
57 − 37 = 20