13. 5/8÷5/4+3/23÷9/11
23) 1,2×2,5+0,8×2,5
24) 8,9×1,25-0,9×1,25
25) 12,5×7,4×0,8
26) 9,9×6,4- (2,5+0,24)(27) 6,5×9,5+6,5×0,5
0,35×1,6+0,35×3,4
0,25×8,6×4
6,72- 3,28-1,72
0,45+6,37+4,55
5,4+6,9×3-(25-2,5)2×41846-620-380
4,8×46 +4,8×54
0,8+0,8×2,5
1,25×3,6×8×2,5-12,5×2,4
28×12,5-12,5×20 p>
23.65-(3.07+3.65)
(4+0.4×0.25)8×7×1.25
1.65×99+1.65
27.85-(7.85+3.4)
48×1.25+50×1.25×0.2×8
7.8×9.9+0.78
(101309 +4 +681+6)×12
3×9146×782×6×854
5.15×7/8+6.1-0.60625
1.3/ 7 × 49/9 - 4/3
2.8/9 × 15/36 + 1/27
3.12× 5/6 – 2/9 ×3
4.8× 5/4 + 1/4
5.6÷ 3/8 – 3/8 ÷6
6.4/7 × 5/9 + 3/7 × 5/ 9
7,5/2 -( 3/2 + 4/5 )
8,7/8 + ( 1/8 + 1/9 )
9,9 × 5/ 6 + 5/6
10,3/4 × 8/9 - 1/3
11,7 × 5/49 + 3/14
12,6 × ( 1 /2 + 2/3 )
13,8 × 4/5 + 8 × 11/5
14,31 × 5/6 – 5/6
15.9/ 7 - ( 2/7 – 10/21 )
16.5/9 × 18 – 14 × 2/7
17.4/5 × 25/16 + 2/ 3 × 3/ 4
18,14 × 8/7 – 5/6 × 12/15
19,17/32 – 3/4 × 9/24
20,3 × 2/ 9 + 1/3
21,5/7 × 3/25 + 3/7
22,3/14 × 2/3 + 1/6
23.1/ 5 × 2/3 + 5/6
24.9/22 + 1/11 ÷ 1/2
25.5/3 × 11/5 + 4/3
26,45 × 2/3 + 1/3 × 15
27,7/19 + 12/19 × 5/6
28,1/4 + 3/4 ÷ 2/3
29,8/7 × 21/16 + 1/2
30,101 × 1/5 – 1/5 × 21
31,5160÷ 40 (58+ 370)÷(64-45)
32,12
0-144÷18+35
33.347+45×2-4160÷52
34(58+37)÷(64-9×5)
35.95÷(64-45)
36.178-145÷5×6+42 42580-64×21÷28
37.812-700÷(9+31×11 ) (136+64)×(65-345÷23)
38.85+14×(14+208÷26)
39.(284+16)×(512- 8208÷18)
40.120-36×4÷18+35
41.(58+37)÷(64-9×5)
42 .(6.8-6.8×0.55)÷8.5
43.0.12× 4.8÷0.12×4.8
44.(3.2×1.5+2.5)÷1.6 (2)3.2×( 1,5+2,5)÷1,6
45,6-1,6÷4= 5,38+7,85-5,37=
46,7,2÷0,8-1,2×5= 6-1,19×3-0,43=
47,6,5×(4,8-1,2×4)= 0,68×1,9+0,32×1,9
48,10,15-10,75×0,4-5,7
49,5 .8×(3.87-0.13)+4.2×3.74
50.32.52-(6+9.728÷3.2)×2.5
51.[(7.1-5.6)×0.9- 1.15] ÷2.5
52.5.4÷[2.6×(3.7-2.9)+0.62]
53.12×6÷(12-7.2)-6 (4)12×6 ÷7.2-6
102×4.5
7.8×6.9+2.2×6.9
5.6×0.25
8×(20- 1.25)
1)127+352+73+44 (2)89+276+135+33
(1)25+71+75+29 +88 (2) 243+89+111+57
9405-2940÷28×21
920-1680÷40÷7
6947×52-398
148+3328÷64-75
360×24÷32+730
2100-94+48×54
51+ (2304-2042)×23
4215+(4361-716)÷81
(247+18)×27÷25
36-720÷ (360÷18)
1080÷(63-54)×80
(528+912)×5-6178
8528÷41×38- 904
264+318-8280÷69
(174+209)×26- 9000
814-(278+322)÷15
1406+735×9÷45
3168-7828÷38+504
796-5040÷(630÷7)
285+ (3000-372)÷36
1+5/6-19/12
3x(-9)+7x(-9
(-54 )x1/6x(-1/3)
1.18.1+(3-0.299÷0.23)×1
2.(6.8-6.8×0.55)÷8.5
3.0.12× 4.8÷0.12×4.8
4.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6