Tính nhanh: 43.17 + 29.57 + 13.43 + 57.
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tính nhanh
43.17+29.57+13.43+57
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\(43\cdot17+29\cdot57+13\cdot43+57\)
\(=43\cdot\left(17+13\right)+57\cdot\left(29+1\right)\)
\(=43\cdot30+57\cdot30\)
\(=30\cdot\left(43+57\right)\)
\(=30\cdot100\)
\(=3000\)
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43.17+29.57+13.43+57
=43.17+29.57+13.43+57.1
=43.(17+13)+57.(29+1)
=43.30+57.30
=30.(43+57)
=30.100
=3000
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43.17+29.57+13.43+57
\(43.17+29.57+13.43+57\\ =43.\left(17+13\right)+57.\left(29+1\right)\\ =43.30+57.30\\ =30.\left(43+57\right)\\ =30.100\\ =3000\)
chúc bạn học tốt !!!
43.17 + 29.57 + 13.43 + 57 = (43.17) + (13.43) + (29.57) + 57 = 43. (17 + 13) + 57. (29 + 1) = 43.30 + 57.30 = (43 + 57).30 = 100.30 = 3000.
43.17+29.57+13.43+57
=43.17+29.57+13.43+57.1
=43.(17+13) + 57.(29+1)
=43.30 + 57.30
=(43+57) .30
=100.30
=3000
Xem thêm câu trả lời
43.17+29.57+13.43+57
43.17+29.57+13.43+57
=43.17+29.57+13.43+57.1
=43.(17+13)+57.(29+1)
=43.30+57.30
=30.(43+57)
=30.100
=3000
\(43.17+29.54+13.43+54\)
\(=43.\left(17+13\right)+54.\left(29+1\right)\)
\(=43.30+54.30\)
\(=30.\left(43+54\right)\)
\(=30.97\)
\(=2910\)
Tính nhanh:
a) 23.56 + 56.77;
b) 32.19 + 32;
c) 35.34 + 35,86 + 65.75 + 65.45;
d) 43.17 + 29.57 + 13.43 + 57;
e) 3.25.8+4.37.6 + 2.38.12
f) 64.16+81.84+17.16
a) 23.56 + 56.77 = (23 + 77).56 = 100.56 = 5600.
b) 32.19 + 32 = 32.(19 +1) = 32.20 = 640.
c) 35.34 + 35.86 + 65.75 + 65.45 = 35.(34 + 86) + 65.(75 + 45)
= 120.35+120.65 -120.(35 + 65) = 12000.
d) 43.17 + 29.57 +13.43 + 57 = 43.(17 +13) + 57.(29 +1)
= 43.30 + 57.30 = 30. (43+57) = 3000.
e) 3.25.8 + 4.37.6 + 2.3812 - 24.25 + 24.37 + 24.38
= 24.(25 + 37 + 38) = 2400.
f) 64.16 + 81.84+17.16 = 16.(64+17)+81.84 = 16.81+81.84
= 81.(16 + 84) = 8100
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Tính nhanh:
a) 23.56 + 56.77;
b) 32.19 + 32;
c) 35.34 + 35,86 + 65.75 + 65.45;
d) 43.17 + 29.57 + 13.43 + 57;
e) 3.25.8+4.37.6 + 2.38.12
f) 64.16+81.84+17.16
a) 23.56 + 56.77 = (23 + 77).56 = 100.56 = 5600.
b) 32.19 + 32 = 32.(19 +1) = 32.20 = 640.
c) 35.34 + 35.86 + 65.75 + 65.45 = 35.(34 + 86) + 65.(75 + 45)
= 120.35+120.65 -120.(35 + 65) = 12000.
d) 43.17 + 29.57 +13.43 + 57 = 43.(17 +13) + 57.(29 +1)
= 43.30 + 57.30 = 30. (43+57) = 3000.
e) 3.25.8 + 4.37.6 + 2.3812 - 24.25 + 24.37 + 24.38
= 24.(25 + 37 + 38) = 2400.
f) 64.16 + 81.84+17.16 = 16.(64+17)+81.84 = 16.81+81.84
= 81.(16 + 84) = 8100
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TÍNH NHANH
43.17+29.57+13.43+57
\(\text{43.17+29.57+13.43+57}\)
\(=43.\left(17+13\right)+57.\left(29+1\right)\)
\(=43.30+57.30\)
\(=30.\left(43+57\right)\)
\(=30.100\)
\(=3000\)
Học tốt
43.17+29.57+13.43+57
= 43.17 + 13.43 + 29.57 + 57
= 43 ( 17 + 13 ) + 57 ( 29 + 1 )
= 43 . 30 + 57 . 30
= 30 ( 43 + 57 )
= 30 . 100
= 3000
43 . 17 + 29 . 57 + 13 . 43 + 57
= 43 ( 13 + 17 ) + 57 ( 1 + 29 )
= 43 . 30 + 57 . 30
= ( 43 + 57 ) . 30
= 100 . 30
= 3000
Hok tốt
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Xem thêm câu trả lời
Tính nhanh:
a)32.19+32
b)43.17+29.57+13.43+57
c)1326+538-326-38
d)375:25-125:25
a, Ta có : 32.19+32=32.(19+1)
=32.20
=640
làm giúp mình bài này nhé
tính nhanh
43.17+29.57+13.43+57
lưu ý dấu chấm trên đó là nhân đó nha
43.17+29.57+13.43+57
=43.(17+13)+57.(29+1)
=43.30+57.30
=30.(43+57)
=30.100=3000
\(43.17+29.57+13.43+57\)
\(=43.\left(17+13\right)+57.\left(29+1\right)\)
\(\text{= 43.30 + 57.30}\)
\(=30.\left(47+57\right)\)
\(=30.100\)
\(=3000\)
Hok tốt !
\(43.17+29.57+13.43+57\)
\(=\left(43.17+13.43\right)+\left(29.57+57\right)\)
\(=43.\left(17+13\right)+57.\left(29+1\right)\)
\(=43.30+57.30\)
\(=30.\left(43+57\right)=30.100=3000\)
Tính nhanh.a) 14 + 27 + 36b) 4.15.25.6c) 5.125.2.4d) 176+483+24+117e) 12.41 + 12.59f) 17.32 + 43.17 + 17.25 g) 2 + 4 + 6 +… + 22
Đọc tiếp
Tính nhanh.
a) 14 + 27 + 36
b) 4.15.25.6
c) 5.125.2.4
d) 176+483+24+117
e) 12.41 + 12.59
f) 17.32 + 43.17 + 17.25
g) 2 + 4 + 6 +… + 22
a) 14 + 27 + 36 = (14 + 36) + 27 = 50 + 27 = 77
b) 4.15.25.6 = (4.25).(15.6) = 100.90 = 9000
c) 5.125.2.4 = (5.4).(125.4) = 10.500 = 5000
d) 176 + 483 + 24 + 117 = (176+24) + (483 + 117) = 200 + 600 = 800
e) 12.41 + 12.59 = 12.(41+59) = 12.100 = 1200
f) 17.32 + 43.17 + 17.25 = 17.(32+43+25) = 17.100 = 1700
g) 2 + 4 + 6 + … + 22 = 2.(1 + 2 + 3 + … + 11) = 2.(12.11:2) = 2.66 = 132
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