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1
=48,72-(2,67+5,33)
=48,72-8
=40,72
2
=(0,8x12,5)x26,35
=10x26,35
=263,5
3
=20,32+(94,21-44,21)
=20,32+50
=70,32
4
53,32x78=21x56,32+56,32x1
53,32x78=(21+2)x56,32
53,32x78=22x56,72
53,32x78=1247,84
48,72 - 2.67 - 5,33
=48,72 - (2.67 + 5,33)
=48,72-8
=40,72
b) 94,21 + 20,32 -44,21
=(94,21-44,21)+20,32
=50+20,32
=70,32
c) 56,32 x 78+21x56,32+56,32
=56,32 x 78+21x56,32+56,32 x 1
=56,32 x (78+21+1)
=56,32 x 100
=5632
\(56,32x78+21x56,32+56,32\)
\(=56,32x\left(78+21+1\right)\)
\(=56,32x100=5632\)
a/\(4,19\times50-132:\dfrac{2}{3}\)
\(=209,5-198\)
\(=11,5\)
b/\(637,38:18\times2,5\)
\(=35,41\times2,5\)
\(=88,525\)
c/\(56,32-13,4\times2,4\)
\(=56,32-32,16\)
\(=24,16\)
d/\(\dfrac{2}{5}:\left(\dfrac{4}{5}-\dfrac{1}{2}\right)\)
\(=\dfrac{2}{5}:\dfrac{3}{10}\)
\(=\dfrac{4}{3}\)
hrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
96,73 * 5348 = 517 312,04
36,98 : 5,32 = 6,95 (dư 0,60)
48,54 * 89,6 = 4349,184
998,6 : 5,3 = 188,41 (dư 2,7)
873,7 : 63 = 13,86 ( Dư 52 )
5,217 * 8,62 = 44,97054
19,04 : 5,6 = 3,4
637,38 : 18 = 35,41
56,32 x 2,4 = 135,168
Hok tốt
a) 12,4 x 72,53 + 72,47 x 12,4
= 12,4 x ( 72,53 + 72,47 )
= 12,4 x 145
= 1798.
b) 56,32 - 13,4 x 2,4 = 56,32 - 32,16
= 24,26.
a)40,72
b)70,32
c)263,5
d)5663,2
a ) 48 , 72 - 2 , 67 - 5 , 33
= 48 , 72 - ( 2 , 67 + 5 , 33 )
= 48 , 72 - 8
= 40 , 72
b ) 94 , 21 + 20 , 32 - 44 , 21
= ( 94 , 21 - 44 , 21 ) + 20 , 32
= 50 + 20 , 32
= 70 , 32
c ) 0 , 8 x 26 , 35 x 12 , 5
= ( 0 , 8 x 12 , 5 ) x 26 , 35
= 10 x 26 , 35
= 263 , 5
d ) 56 , 32 x 78 + 21 x 56 , 32 + 56 , 32
= 56 , 32 x ( 78 + 21 + 1 )
= 56 , 32 x 100
= 563 , 2
Chúc bạn học tốt !!!