28.76-2.38.16+19.4.88
28.76+23.28 -28.13
28.76+23.28-28.13
\(28\cdot76+23\cdot28-28\cdot13\)
\(=28\cdot\left(76+23-13\right)\)
\(=28\cdot86\)
\(=2408\)
28.76+23.28-28.13
= 28. (76+23-13)
= 28. 86
= 2408
#Học tốt nha bạn
Tinh nhanh : 28.76+13.28+9.28
28.(76+13+9)=28.98=2744
chúc bạn học tốt
28.76+13.28+9.28
=28.(76+13+9)
=28.98
=2744
28.76+13.28+9.28
=28.(76+13+9)
28.98
=2744
a/4.52-3.23+33:32
b/28.76+24.28-28.20
a/4.52-3.23+33:32
=4.25-3.8+3
=100-24+3
=79
b/28.76+24.28-28.20
=28(76+24-20)
=28.80
=2240
B1:Thực hiện phép tính sau đây
a 72.56+56.28 b53.125-24.53-53
c 42.53+47.156-47.114 d 28.76+28.25+28
e 37.59-37.3+49.37 f 2.14.18+3.12.17+4.69.9
a: \(72\cdot56+56\cdot28=56\left(72+28\right)=5600\)
b: \(53\cdot125-24\cdot53-53=53\left(125-24-1\right)=5300\)
c: \(42\cdot53+47\cdot156-47\cdot114=42\cdot53+47\cdot42=4200\)
d: \(28\cdot76+28\cdot25+28=28\cdot\left(76+25+1\right)=2800\)
e: \(37\cdot59-37\cdot3+37\cdot49=37\left(59-3+49\right)=3885\)
a) \(72.56+56.28=56\left(72+28\right)=56.100=5600\)
b) \(53.125-24.53-53=53\left(125-25-1\right)=53.100=5300\)
c) \(42.53+47.156-47.114=42.53+47\left(156-114\right)=42.53+47.42=42\left(53+47\right)=42.100=4200\)
d) \(28.76+28.25+28=28\left(76+25+1\right)=28.102=2856\)
e) \(37.59-37.3+49.37=37\left(59-3+49\right)=37.105=3885\)
f) \(2.14.18+3.12.17+4.69.9=36\left(14+17+69\right)=36.100=3600\)
a) = 56 . ( 72 + 28 )
= 56 . 100
= 5600
b) = 53 . ( 125 - 24 - 1 )
= 53 . 100
= 5300
c) = 42 . 56 + 47 . ( 156 - 114 )
= 42 . 56 + 47 . 142
= 2352 + 6674
= ...
d)= 28 . ( 76 + 25 +1 )
= 28 . 102
=...
e) = 37 . ( 59 - 3 + 49 )
= 37 . 13
=...
1)thực hiện phép tính:
a)4.52 - 32 . 23 + 122 : 4
b.28.76+47.39-29.47+24.28
Thực hiện các phép tính(nếu có thể)
a) 4.52-3.23+33:32
b) 28.76+24.28-28.20
Ai nhanh tay tl mk tick
a.\(4.5^2-3.2^3+3^3:3^2=4\left(5^2-3.2\right)+3=4.19+3=79\)
b.\(28.76+24.28-28.20=28\left(76+24-20\right)=28.80=2240\)
Bài 1: Thực hiện phép tính
1) 17 . 85 + 15 . 17 – 120
| 9)
|
2) 23 . 17 – 23 . 14 | 10) |
3) 20 + | 11) 5871: {928 -[(-82) +247) ].5} |
4) 28.76+23.28 -28.13 | 12) 112:11-55 |
5) 15.36 – 15.10 + 26.85 | 13) |
6) 75 – ( 3.52 – 4.23) | 14) |
7) 4.52 – 3.23 + 33:32 | 15) |
8) 80 – (4 . 52 – 3 . 23) | 9) 80 – 73.3 10) -8 – 51.2 |
1, 17.( 85+15) -120 = 17. 100 -120 =1700 - 120 =1580
2,
23 . 17 - 23 . 14
= 23(17-14)
=23. 3= 24
Thực hiện các phép tính (nếu tính nhanh có thể)
a) 4.52-3.23
b) 28.76+13.28+9.2
c) 1024:(17.25+15.25)
Mong mn giúp đỡ
a) 4.52-3.23 = 22.52-3.23 = 22.(52-3.2) =22.(25-6) = 4.19 = 76
b) 28.76 + 13.28 + 9.2
= 28. (76 + 13) + 18
= 28. 89 + 18
= 2492 + 18
= 2510
c) 1024: ( 17 .25+15.25)
= 210 : [25.(17+15)]
= 210: [25. 32]
= 210: [25.25)
= 210:210
= 1
a) 4.52-3.23
=22.52-3.23
=22.(25-6)
=4.11
=44
b) 28.76+13.28+9.2
=28.(76+13)+9.2
=28.89+9.2
=2.(1246+9)
=2.1255
=2510
c) 1024:(17.25+15.25)
=1024:25.(17+15)
=1024:32.32
=1