a) 37.24+37.76+63.79+21.63
= 37(24+76)+63(79+21)
= 37.100+63.100
= (37+63)100
= 100.100
= 10000
b) 101+(-60)+29+(-40)
= (101+29)+(-60-40)
= 130-100
= 30
c) 40+(139-172+99)-(139+199-127)
= 40+139-172+99-139-199+127
= (139-139)+(-127+127)+(99-199)+40
= 0+0-100+40
= -60
d) (158.129-158.39):180
= [158(129-39)]:180
= (150.90):180
= 75
=
a) 37.24 + 37.76 + 63.79 + 21.63
b) 101 + (-60) + 29 + (-40)
c) 40 + (139 – 172 + 99) – (139 + 199 – 127)
d) (158.129 – 158.39):180
Bài 1 (2 điểm): Thực hiện phép tính
a) 37.24 + 37.76 + 63.79 + 21.63
b) 101 + (-60) + 29 + (-40)
c) 40 + (139 – 172 + 99) – (139 + 199 – 127)
d) (158.129 – 158.39):180
Bài 1 đề 4
Thực hiện phép tính :
a) 37.24 + 37.76 + 63.79 + 21.63
b) 40 + (139-172+99) - (139+199-172)
Bài 1 (2 điểm): Thực hiện phép tính
a) 37.24 + 37.76 + 63.79 + 21.63
b) 101 + (-60) + 29 + (-40)
c) 40 + (139 – 172 + 99) – (139 + 199 – 127)
d) (158.129 – 158.39):180
g) 101 + (–60) + 29 + (–40)
h) 167 + (–252) + 52 + (–67) i) 38 – 138 + 250 – 350
k) 118 + 107 – (118 – 93) – 50 m) 40 + (139 – 172 + 99) – (139 + 199 – 172)
c) 40 + (139 – 172 + 99) – (139 + 199 – 127)
c) 40 + (139 – 172 + 99) – (139 + 199 – 127)
40 + ( 139 - 172 + 99 ) - (139 +199 -127 )
40+(139-172+99)-(139+199-172)
