Hãy CM : 16+53+3+27+7=14
Những câu hỏi liên quan
1+2+3+4+5+6+7+8+9+10=
11+12+13+14+15+16+17+18+19+20=
1+2+3+4+5+6+7+8+9+10+11+12+13+14 +15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30-50-53=
bạn5 bạn nào làm nhanh mình sẽ tích cho bạn đó
1+2+3+4+5+6+7+8+9+10=55
11+12+13+14+15+16+17+18+19+20=155
1+2+3+4+5+6+7+8+9+10+11+12+13+14 +15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30-50-53=362
1+2+3+4+5+6+7+8+9+10=55
11+12+13+14+15+16+17+18+19+20=155
1+2+3+4+5+6+7+8+9+10+11+12+13+14 +15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30-50-53=362
1+2+3+4+5+6+7+8+9+10=55
11+12+13+14+15+16+17+18+19+20=155
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30-50-53=362
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TÍNH NHANH
A, 54*14-54*53+14*146-53*44
B,2^8*510-128*128
C,18^6*2^12*4^3*9^3 : 16^3*6^9*27^3
1+2+3+4+5+6+7+8+9+10=
11+12+13+14+15+16+17+18+19+20=
1+2+3+4+5+6+7+8+9+10+11+12+13+14 +15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30-50-53=bạn5 bạn nào làm nhanh mình sẽ tích cho bạn đó
\(1+2+3+4+5+6+7+8+9+10=55\)
\(11+12+13+14+15+16+17+18+19+20=155\)
4/7 + 3/7 : 5/14 7/12 - 1/12 nhân 4/3 nhân 27/16
a)\(=\dfrac{4}{7}+\dfrac{3}{7}\times\dfrac{14}{5}=\dfrac{4}{7}+\dfrac{6}{5}=\dfrac{20}{35}+\dfrac{42}{35}=\dfrac{62}{35}\)
b)\(=\dfrac{7}{12}-\dfrac{1}{12}\times\dfrac{4}{2}\times\dfrac{27}{16}=\dfrac{7}{12}-\dfrac{3}{16}=\dfrac{19}{48}\)
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3/41 - 12/47 + 27/53 + 4/41 - 16/47 + 36/53
\(\dfrac{3}{41}-\dfrac{12}{47}+\dfrac{27}{53}+\dfrac{4}{41}-\dfrac{16}{47}+\dfrac{36}{53}\)
\(=\left(\dfrac{3}{41}+\dfrac{4}{41}\right)-\left(\dfrac{12}{47}+\dfrac{16}{47}\right)+\left(\dfrac{27}{53}+\dfrac{36}{53}\right)\)
\(=\dfrac{7}{41}-\dfrac{28}{47}+\dfrac{63}{53}\)
\(=-\dfrac{819}{1927}+\dfrac{63}{53}\)
≃\(0,8\)
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tính nhanh nhé
7) 53(51+4)+53(49+96)+53
8)42(15+96)+6(25+4).7
9) 45(13+78)+9(87+22).5
10) 16(27+75)+8(53+25).2
7)
53.(51+4)+53.(49+96)+53
=53.55+53.145+53
=53.(55+145+1)
=53.201
=10653
8)
42.(15+96)+6.(25+4).7
=42.111+(6.7).29
=42.111+42.29
=42.(111+29)
=42.140
=5880
9)
45.(13+78)+9.(87+22).5
=45.91+(9.5).109
=45.91+45.109
=45.(91+109)
=45.200
=9000
10)
16.(27+75)+8.(53+25).2
=16.102+(8.2).78
=16.102+16.78
=16.(102+78)
=16.180
=2880
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7)
53.(51+4)+53.(49+96)+53
=53.55+53.145+53
=53.(55+145+1)
=53.201
=10653
8)
42.(15+96)+6.(25+4).7
=42.111+(6.7).29
=42.111+42.29
=42.(111+29)
=42.140
=5880
9)
45.(13+78)+9.(87+22).5
=45.91+(9.5).109
=45.91+45.109
=45.(91+109)
=45.200
=9000
10)
16.(27+75)+8.(53+25).2
=16.102+(8.2).78
=16.102+16.78
=16.(102+78)
=16.180
=2880
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tính nhanh
3) 14.35.5+10.25.7+20.7
4) 15(27+18+6)+ 15(23.12)
5) 24(15+49)+12(50+42)
6) 10(81+19)+100+50(91+9)
7) 53(51+4)+53(49+96)+53
8)42(15+96)+6(25+4).7
9) 45(13+78)+9(87+22).5
10) 16(27+75)+8(53+25).2
giúp mik nhé các bạn mong các bạn giúp đỡ
5) 24*(15+49)+12*(50+42)
=24*64+12*92
=24*64+12*2*46
=24*64+24*46
=24*(64+46)
=24*110
=2640
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7) 53*( 51+4)+53*(49+96)+53
=53*55+53*145+53
=53*(55+145)+53
=53*200+53
10600+53
=10653
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tính
a, 16.(27+15)+8.(53+25):2
b, 53.(51+4)+53.53.(49+96)+53
c,158+445+555
d,125.98.2.8.25
e,7+10+13+16+19+22+25
a, 16.(27+15)+8.(53+25):2
= 4.[(27+15).4] + 4.(53+25)
= 4.168 + 4.312
= 4.(168+312)
= 4.480=1920.
...
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Câu b tình bt thui!
b, 53.(51+4)+53.53.(49+96)+53
=53.55+53.53.145+53
=2915+407305+53
=410220+53=410273
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d,125.98.2.8.25
= 25.2.2.98.2.2.2.2.25.
= [(25.2.2.2)+(25.2.2.2)].98.
= (200 + 200).98.
= 400 . 98 = 39200.
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21 tháng 3 2022 lúc 18:18
16/7:4..... 9/14 nhân 4/3, 27/12+5/6..... 7/3:4/5, đề bài là điền ><=
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