Question

bài 1:

a) 52 x 0,07 + 48 x 0,07 ; b) 63 x 1,01 + 37 x 1,01

b) 1,32 x 99 + 1,32  ; d)  (87 x 4,2 + 87 x1,5) : 5,7

e) 65 x 4,2 - 130 x 2,1 + 2022 ; f) 65,65 : 25 -13,13 +2021

Answer 1

a) \(...=0,07\left(52+48\right)=0,07.100=0,7\)

b) ... = \(1,01\left(63+37\right)=1,01.100=10,1\)

c) ... = \(1,32\left(99+1\right)=1,32.100=13,2\)

d) ... = \(87\left(4,2+1,5\right):5,7=87\)

e) ... = \(130.2,1-130.2,1+2022=2022\)

f) ... = \(2,626-13,13+2021=2010,496\)