27.75+27.7:25-170
Bài 2.Thực hiện phép tính
a,27.75+25.27-150
c,13.17-256:16+14:7-1
d,18:3+182+3.(51:17)
e,15-25:8(100.2)
f,25.8-12.5+170:17-8
a,27.75+25.27-150
=27.(75+25)-150
=27.100-150
=2700-150
=2550
c,13.17-256:16+14:7-1
=221-16+2-1
=205+2-1
=208-1
=207
d,18:3+182+3.(51:17)
=18:3+182+3.3
=6+182+9
=188+9
=197
e,15-25:8(100.2)
=15-25:8.200
=15-3,125.200
=15-625
=-610
f,25.8-12.5+170:17-8
=200-60+10-8
=140+10-8
=150-8
=142
12:1400.(500-(125+25.70 tôi ko biết làm
27.75+25.27-150
\(27.75+25.27-150=27\left(75+27\right)-150=27.102-150=2754-150=2604\)
\(27.75 +25.27 − 150 = 27 (75 + 27) − 150 = 27.102 − 150 = 2754 − 150 = 2604\)
27.75 + 25.27 - 150
= 27.(75 + 27) - 150
= 27.102 - 150
= 2754 - 150
= 2604
27.75+25.27
27.75+25.27
=27.(75+25)
=27.100
=2700
27.75+25.27
=27.(75+25)
=27.100
=2700
**** đi nha
27.75+25.27-150
27.75+25.27-100=?
27.75+25.27-100=27(75+25)-100=27.100-100=2700-100=2600
27.75+25.27-100=27(75+25)-100=27.100-100=2700-100=2600
27.75+25.27-100
=27(75+25)-100
=27.100 -100
=2700-100
=2600
Tính nhanh:
a) 40.113.25 - 20.112.50
b) 27 + 27.5 + 27.7 - 27.2
c) 754 . 75 - 25 . 2262 + 4568
Tính nhanh:
a, 40.113.25 – 20.112.50
b, 27 + 27.5 + 27.7 – 27.2
c, 754.75 – 25.2262 + 4568
a) 40.113.25 – 20.112.50 = 40.25.113 – 20.50.112
= 1000.113 – 1000.112 = 1000(113 – 112) = 1000.1 = 1000
b) 27 + 27.5 + 27.7 – 27.2 = 27.(1 + 5 + 7 – 2) = 27.11 = 297
c) 754.75 – 25.2262 + 4568 = 754.75 – 25.3.754 + 4568
= 754.75 – 75.754 +4568 = 754.(75 – 75) + 4568 = 4568
27.75+25.27-150
27.75 + 25.27 - 150 = 27.(75 + 25) - 150 = 27.100 - 150 = 2700 - 150 = 2550
27 . 75 + 25 . 27 - 150
= 27 . ( 75 + 25 ) - 150
= 27 . 100 - 150
= 2700 - 150
= 2550
27.75+25.27-150 =27.(75+25)-150 =27.100-150 =2700-150 =2550
Thực hiện phép tính: 27.75 + 25.27 – 150
27.75 + 25.27 – 150
= 27(75 + 25) - 150
= 27.100 - 150
= 2700 - 150
= 2550
hoặc
27.75 + 25.27 - 150
= 2025 + 675 - 150
= 2700 - 150
= 2550
27.75 + 25.27 – 150
= 27(75 + 25) - 150
= 27.100 - 150
= 2700 - 150
= 2550
hoặc
27.75 + 25.27 - 150
= 2025 + 675 - 150
= 2700 - 150
= 2550
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