Question

13) (8.41 X 103) + (9.71 X 104)=
15) (8.2 X 102) + (4.0 X 10) =
17) (3 X 105) (3 X 105) =
19) ( 4 X 106) (4 X 10-4)=
21) (6.7 X 107): (8.6 X 10) =
14) (5.11 X 102) - (4.2 X 102) =
16) (6.3 X 10-2) - (2.1 X 10-1) =
18) (2 X 107 (3 X 109) =
20) (3.45 X 108): (6.74 X 102) =
22) (4.7 X 102): (5.7 X 196) =
​

Answer 1

( 8.41 X 103) + ( 9.71X 104)

866.23 +1,009.84

1.876.07

(8.2 X 102) + (4.0 X 10 )

836.4 + 40

876.4

(3 X 105 ) + ( 3 X 105 )

315 + 315

630

(4 X 106) + ( 4 X 10 -- 4)

424 + 36

460

( 6.7 X 107 ) ÷ ( 8.6 X 10)

716.9 ÷ 86

8.336.....

( 5.11X 102 ) - ( 4.2X 102 )

521.22 - 428.4

92.82

( 6.3 X 10 - 2 ) - ( 2.1 X 10 - 1 )

61 -- 20

41

( 2 X 107 ) + ( 3 X 109 )

214 + 327

541

( 3.45 X 108 ) ÷ ( 6.74 X 102 )

372.6 ÷ 687.48

0.541

( 4.7 X 102 ) ÷ ( 5.7 X 196 )

479.4 ÷ 1,1172

429.108 .....