1,47x3,6+1,47+1,47x64

=1,47(3,6+6,4+1)

=1,47x11

=16,17

45,83-8,46-7,37=30

1,47x3,6+1,47+1,47x6,4=16,17

25,8x1,02-25,8x1,01=0,258

bn nhớ k cho mik nha !!<3

1,47 x 3,6 + 1,47 x 5,4 + 1,47 x 1

= 1,47 x ( 3,6 + 5,4 + 1)

= 1,47 x 10

= 14,7

1,47 x 3,6 + 1,47 x 6,4

=1,47 x ( 3,6 + 6,4)

= 1,47 x 10

= 14,7

1,47x3,6+1,47x6,4=1,47x(3,6+6,4)=1,47x10=14,7

a: 5,67x2,5x0,4=5,67

1,4x3,6+1,4x6,4=1,4x10=14

b: 0,25x0,68x40=10x0,68=6,8

25,8x1,02-25,8x1,01=25,08x0,01=0,2508

a) = 1,47 x ( 3,6 + 6.4 )

= 1,47 x 10

= 14,7

b) = 25,8 x ( 1,02 - 1,01 )

= 25,8 x 0,01

= 0,258

a, 14,7

b, 0,258

\(a)\) \(5,67 \) \(\times \) \(2,5 \) \(\times\) \(0,4\) 

\(= 5,67 \) \(\times \) \(( \) \(2,5 \) \(\times \) \(0,4 \) \() \)

\(= 5,67 \times 1 \)

\(= 5,67\) 

\(b) \) \(1,47 \times 3,6 + 1,47 \times 6,4\)

\(= 1,47 \times ( 3,6 + 6,4 )\)

\(= 1,47 \times 10 \)

\(= 14,7\)

\(c) \) \(0,25 \times 0,68 \times 40 + 25,8 \times 1,02 - 25,8 \times 1,01\)

\(= 0,68 \times ( 0,25 \times 40 ) + 25,8 \times 1,02 - 25,8 \times 1,01\)

\(= 0,68 \times 1 + 25,8 \times ( 1,02 - 1,01 )\)

\(= 0,68 + 25,8 \times 0,01\)

\(= 0,68 + 0,258 \)

\(= 0,938\)

57,53 ×1,25 + 42,47 ×1,25

=0,8x2x48+1,6x2+1,6x50

=1,6x48+1,6x2+1,6x50

=1,6x(48+2+50)

=1,6x100

=160

a: \(0,8\times96+1,6\times2+1,6\times50\)

\(=1,6\times48+1,6\times2+1,6\times50\)

\(=1,6\times\left(48+2+50\right)=1,6\times100=160\)

b: \(1,47\times3,6+1,47\times6,4\)

\(=1,47\times\left(3,6+6,4\right)\)

=1,47x10

=14,7

c: \(69,78\times75\%+69,78\times\frac14+69,78\times99\)

\(=69,78\times\left(0,25+0,75+99\right)\)

=69,78x100

=6978

x= 3,1 x 1,47 + 0,013 = 4,57

x :3,1 = 1,47 {dư 0,013}

x=1,47(dư 0,013) x 3,1

x=4,557 + 0,013

x=4,57