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\(12\div\frac{393}{35}=\frac{12\times35}{393}=\frac{420}{393}=\frac{140}{131}\)
K TỚ NÀO !!!
27 m 35 cm = ......... m
12 dm7cm =................ dm
5km 360 m =......... km
345 m =...............km
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27 m 35 cm = 27,35 m
12 dm7cm = 12,7 dm
5km 360 m = 5,36 km
345 m = 0,345 km
TL:
27m 35 cm = 27,35 m
12 dm 7cm = 12,7dm
5km 360 m = 5km
345 m = 0,345 km
~HT~
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minh co the giai giup ban nhung ban co the viet ro ra hon duoc khong Minh can doc bai nay de giai gup ban
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X=(1800+600):30):560:(315:35)
X=(2400:30):560:9
X=80:560:9
X=80x1/560x1/9
X=1/7x1/9
X=1/63
A=58x72+63x81-58x52-63x61
= (58x72-58x52)+(63x81-63x61)
= 58(72-52)+63(81-61)
= 58x20+63x20
= 1160+1260
= 2420
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83 . 27 + 83 . 35 + 17 . 62
= 83 ( 27 + 35 ) + 17 . 62
= 83 . 62 + 17 . 62
= 62 ( 83 + 17 )
= 62 . 100
= 6200
83 x 27 + 83 x 35 + 17 x 62
= 83 x ( 27 + 35 ) + 17 x 62
= 83 x 62 + 17 x 62
= 62 x ( 83 + 17 )
= 62 x 100
= 6200
=420/35-27/35
=393/35
12-\(\frac{27}{35}\)=\(\frac{420}{35}-\frac{27}{35}=\frac{393}{35}\)
TK MIK NHA