6/ (36+79) +(145- 79-36)
71 10-(12-(-9-1)]
8/ (38 – 29 + 43)-(43+38)
9/ 271-[(-43)+271- (-17)]
10/-144-129-(+144)-(+144)]
6/ (36+79) +(145- 79-36) 71 10-(12-(-9-1)] 8/ (38 – 29 + 43)-(43+38) 9/ 271-[(-43)+271- (-17)] 10/-144-129-(+144)-(+144)]
By Quinn
Đáp án:
6/ (36+79) +(145- 79-36)
= 36 + 79 + 145 – 79 – 36
= (36 – 36) + (79 – 79) + 145
= 0 + 0 + 145
= 145
7/ [10-(12-(-9-1)]
=[10 – ( 12 – (-10)]
=10 – 22
= -12
8/ (38 – 29 + 43)-(43+38)
= 38 – 29 + 43 – 43 – 38
= ( 38 – 38) + (43 – 43) – 29
= 0 + 0 – 29
= -29
9/ 271-[(-43)+271- (-17)]
= 271 – 245
=26
câu 10 mik ko làm đc bn thông cảm nha
chúc bn học tốt
6) (36+79) +(145- 79-36) = 36 + 79 + 145 – 79 – 36
= (36-36) + (79-79) +145
= 0 + 0 + 145
= 145
7) [10-(12-(-9-1)] =10 – [( 12 – (-10)]
=10 – (12 +10)
= 10 -12 -10
= (10-10) -12 =12
8) (38 – 29 + 43)-(43+38) = 38 – 29 + 43 – 43 – 38
= ( 38 – 38) + (43 – 43) – 29
= 0 + 0 – 29
= -29
9) 271-[(-43)+271- (-17)] = 271 -(-43 +271 +17)
= 271 +43 -271 -17
= (271-271) +43 -17
=26
10) -144-129-(+144)-(+144)] = -144 -129 -144 -144
= (-144).3 -129
= -432 -129 = -561
Câu 10 ko tính nhanh đc bn!!!