10^2x10^3
a=[(7^2x10^3+6^2x10^3+2x10^4-5000):5^3]:8
a = (7^2.2^3+6^2.2^3+2.5.2^4-40) : 8
= (7^2.8+6^2.8+2^2.5.8-5.8) : 8
= 7^2+6^2+2^2.5-5 = 49+36+20-5 = 100
k mk nha
d) 4x[(3+3^7:3^4):10+97]-300
e) 5x[(92+2^5:2):5^2+24]-7^2
f)3^2x[(5^2-3):11]-2^4+2x10^3-(1^48)^49
2x10^3+7x10^2+8x10+7
Tính bằng hai cách:
a)18x(8-3)
b)180:(2x10)
a)
cách 1: 18x(8-3) = 18 x 5 = 90
cách 2: 18x(8-3)=18x8-18x3=144-54=90
b)
cách 1: 180:(2x10)= 180: 20=9
cách 2: 180:(2x10)=180:2:10=90:10=9
2x10=???
1000:2x10
-2x10+(12x112)--31
2x10=
3x10=
giúp em với ạ
2 x 10
= 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 10
3 x 10
= 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3
= 30
Câu hỏi :
2x10+2x20+2x30+80:2+40:2+20=?
3 ng nhanh nhất tui sẽ k
2x10+2x20+2x30+80:2+40:2+20
= 200
2x10+2x20+2x30+80:2+40:2+20=200
2 x 10 + 2 x 20 + 2 x 30 + 80 : 2 + 40 : 2 +20
=20 + 40 + 60 + 40 + 20 +20
=60 +60 +40 +20 + 20
=120+ 60+20
=180 + 20
200