47.173 + 47 - 47.74
= 47.( 173 + 1 - 74 )
= 47. 100
= 4700
47.33 + 47 + 66.47
24.57 + 43.24
387.2694 + 7305.387 + 387
12.19 + 12
195.56 + 43.105 + 195
Tinh bang cach hop li:
a, 47.33 + 47 + 66.47
b, 24.57 + 43.24
c, 387.2694 + 7305.387 + 387
d, 563.78 - 26.563 + 563.48
ai nhanh dc tik :P
Tính hợp lí:
a) 13.57 + 43.13
b) 39.28 + 39.72
c)345.67 - 245.67
d) 123.34 + 123.26 + 123.40
e) 974.34 + 974.96 - 974.30
f) 37.148 - 37.53 + 37.5
g) 47.173 + 47 + 66.47
h) 24.57 + 43.24
i) 387.2694 + 7305.387 + 387
tinh hop li :
(800+53).53+(900-47).47
help me
tinh hop li: 77-11(30+7)
85(35-27)-35(85-27)
47(45-15)-47(15+45)
Tinh gia tri cua cac bieu thuc sau bang cach hop li
a) 125 : (-61) . (-23) . (-1) 2n
b) 136 . (-47) + 36 . 47
47.(45-15)-47.(45+15). Tinh hop li
4x-15=-75-x
72-3x=5x+8. Tim x
tinh hop ly
47.(45-15)-47.(45+15)
tinh hop li: a,57.(47-74)+47.(74-57). b, -36(16 -41)- 16 (41-36). c, 15.(-27+30) - 27.(30-15) - 30.(5-27). d, (135-35).(-37)+37.(42-58). e,-65-(87-17) - 87.117
Tinh hop li
a,31.(-18)+31.(-81)-31
b,(-12).47+(-12).52+(-12)
c,13.(23+22)-3.(17+28)
d,-48+48.(-78)+48.(-21)
Giai giup mik nhanh nha
