Question

Urgent! Dau coroana!

Answer 1

1)
35,2+
6,93
42,13

2)24,00-
5,38
18, 62

3) 2,8x
6,75
140
196
168
18,900

4)11,583:0,65=17,82

$\frac{11583}{1000} \times \frac{100}{65} = \frac{11583}{650}$
11583:650=17,82
650
=5083
4550
=5330
5200
=1300
1300
====

5)
${1.7}^{3} = 1.7 \times 1.7 \times 1.7 = 4.913$
1,7x
1,7
119
17
2,89x
1,7
2023
289
4,913

6)
$1.(6) + \frac{1}{9} = 1 \frac{6}{9} + \frac{1}{9} = \frac{1 \times 9 + 6}{9} + \frac{1}{9}$
$\frac{15}{9} + \frac{1}{9} = \frac{16}{9} = 1.(7)$

16:9=1,(7)
9
=70
63
=70

7)
$\frac{3}{9} +1 \frac{6}{9} = \frac{3}{9} + \frac{1 \times 9 + 6}{9} = \\ \frac{3}{9} + \frac{15}{9} = \frac{18}{9} = 2$

8)0,1x0,1x0,1+0,2x0,2+0,5=
0,001+0,04+0,5=0,541

9)
1:2=0,5
0
10
10
==
0,5+0,5+10=1+10=11

Answer 2

1.

35,2+6,93=42,13 B

2

24-5,38=18,62 C

3

2,8×6,75=18,9 B

4

11,583:0,65=17,82 D

5

(1,7)^3=4,913 A

6

1,(6)+1/2=16-1/9+1/9=15-1/9=16/9=1,(7) B

7

0,(3)+1,(6)=3/9+16-1=3/9+15/9=18/9=2 A

8

0,1^3+0,2^2+0,5=0,001+0,04+0,5=0,541 B

9

1/2+0,5+10=1+1+20/2=22/2=11 A