\(49,8+3,56-9,8+2,44+54,7-0,7\)

\(=\left(49,8-9,8\right)+\left(3,56+2,44\right)+\left(54,7-0,7\right)\)

\(=40+6+54=46+54=100\)

49,8+3,56-9,8+2,44+54,7-0,7

=(49,8-9,8)+(54,7-0,7)+(3,56+2,44)

=40+54+6=100

49,8 + 3,56 - 9,8 + 2,44 + 54,7 - 0,7

= ( 49,8 - 9,8 ) + ( 54,7 - 0,7 ) + ( 3,56 + 2,44 )

= 40 + 54 + 6

= 40 + 60 

= 100

a) 4 x 3,7 x 2,5

= (4 x 2,5) x 3,7

= 10 x 3,7

= 37

b) 1,25 x 0,7 x 8

= (1,25 x 8) x 0,7

= 10 x 0,7

= 7

a, 4x3,7x2,5=(4x2,5)x3,7=10x3,7=37

b, 1,25x0,7x8=(8x1,25)x0,7=10x0,7=7

a:(4*2.5)*3.7=10*3.7=37

b:(1.25*8)*0.7=10*0.7=7

3,56x6+3,56x3+3,56

=3,56x(1+3+6)

=3,56x10

=35,6

\(3,56\times6+3,56\times3+3,56\)

\(=3,56\times\left(6+3+1\right)\)

\(=3,56\times10\)

\(=35,6\)

# Kukad'z Lee'z

35,6 nha

b, \(\dfrac{4}{9}\) + \(\dfrac{6}{11}\) + \(\dfrac{5}{9}\) + \(\dfrac{16}{11}\) + 7

= (\(\dfrac{4}{9}\) + \(\dfrac{5}{9}\)) + (\(\dfrac{6}{11}\) + \(\dfrac{16}{11}\)) + 7

= 1 + 2 + 7

= 10

a, Đáng lẽ đề phải là:

0,2 x 517 x 7 + 0,7 x 483 x 2 em ạ

9,8 + 8,7 + 7,6 + . . . + 2,1 – 1,2 – 2,3 – 3,4 - . . . – 8,9

= (19,8 – 8,9) + (8,7 – 7,8) + . . . +(2,1 – 1,2)

= 0,9 + 0,9 + 0,9 + 0,9 + 0,9

= 0,9 x 5 = 4,5.

\(\frac{13}{50}+74\%+\frac{41}{100}+0,59\)

\(=\frac{13}{50}+\frac{37}{50}+\frac{41}{100}+\frac{59}{100}\)

\(=\frac{50}{50}+\frac{100}{100}=1+1=2\)

13/50+74%+41/100+0,59=26/100+74/100+41/100+59/100=(26/100+74/100)+(41/100+59/100)=1+1=2

\(\frac{13}{50}+74\%+\frac{41}{100}+\frac{59}{100}\)

=\(\frac{13}{50}+\frac{74}{100}+\frac{41}{100}+\frac{59}{100}\)

=\(\frac{13}{50}+\frac{174}{100}\)

\(=\frac{26+174}{100}\)

\(=\frac{200}{100}=2\)

hok tốt

k cho mik nha

\(\frac{13}{50}+74\%+\frac{41}{100}+0,59\)

\(=\frac{13}{50}+\frac{74}{100}+\frac{41}{100}+0,59\)

\(=0,26+0,74+0,41+0,59\)

\(=1+1\)

\(=2\)

đề có gì bị sai