# 4 by othmanagzennai

VIEWS: 18 PAGES: 3

• pg 1
```									                                                                       .4

:
.                13             29    7    13

.1
1+ p                           d                                                                             A
:                                                      10-p               A
5                                 1+ p                                                    -
.                 1               p
5                             1+ p                                                    -
.p

:
3:                3.14159265358
3.142 :          10-3      3.14159265358
3.14159 :              10-5        3.14159265358

.2

.                 n           a<10                            a         -a×10n        a×10n

:
1,62×107         16200000
3,21 × 10-4        0,000321

.3

-a ×10 n      a ×10 n:
k   -k ×10 n       k ×10 n
.a

1                                                             :
.4
.1.3
-                         -
:
•
10                                                                                 •

:
♦
236900000 = 2.369 × 109                  236900000
2 ×109             236900000                        "
0.046 = 4.6 × 10-2            0.046 ♦
5×10-2          0.046                      "
-                                       -

.

:
( 2,5 ×102)×(5.23 ×10-4)                                    .1
3 ×102          2,5 ×102
5 ×10-4            5,23 ×10-4
15×10-2 :             (3×102)×( 5×10-4)
2×10-1                            15×10-2 = 1.5 × 10-1
2×10-1           ( 2,5 ×102)×(5.23 ×10-4)
9,12×105
.2
3,65×103
4 ×103             3,65×103
9 ×105            9.12 ×105
2               9×105
2,25×10 :
4×103

2                                                  :
.4
2×102
2   9×105
2×10
4×103

21         47
21         48
21         49

3                      :

```
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