Question

1022 +1020
7. Value of
is
1020
(a) 10
(c) 101
(d) 1022
(b) 1042
8. The standard form of the number 12345 is
(a) 1234.5 x 101
(b) 123.45 x 102
(c) 12.345 x 10%
(d) 1.2345 x 104
9. If 21998 - 2 1997 - 21996 + 21995 = K.21995, then the value of K is
(a) 1
(b) 2
(c) 3
(d) 4
10. Which of the follwing is equal to 1?
(a) 2° + 30 + 4°
(b) 2° x 3° x 4°
(c) (3° -2°) x 4°
(d) (3° -2°) x (3° +2°
11. In standard form, the number 72105.4 is written as 7.210
where n is equal to
(a) 2
(b) 3
(c) 4
(d) 5​

Answer 1

Answer:

7.b,8.a,9.c ,10 d ,

Step-by-step explanation:

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