2×24×25+3×41×16+6×2×8×17
=4800
tick mình với
2×24×25+3×41×16+6×2×8×17
=4800
tick mình với
a) 2×24×25+3×41×16+6×2×8×17
b)15×360+15×2×27+1500
c)47×63+53×21+47×37+53
d)2×169×12-3×68×8-24
e)2×56×24-3×36×16+4×12×95-6×3×8×5
f)(36×15×169)÷(5×18×13)
h)(112+2×28-5×28)÷28
i)1448-(448+500)
4.24.5^2-(3^3.18+3^3.12)
31.15.7^2.4-31.49.40
1+2+3+4+5+6+7+8+9+10
1+3+5+7+9+11+13+15+19
2+6+10+14+22+23+26+34
5+8+11+14+17+20+23+26+29
1+6+11+16+21+26+31+36+41+47+51
10+13+16+19+22+25+28+31+34+37+40
5+7+9+11+13+15+17+3+8+13+18+23+28
4+7+10+13+16+19+5+9+13+17+21+25
2.Tính (+5) + ( +4) = ? 3.Tính (- 9) + ( - 1) = ? 4.Tính : 28 + (-15) = ? 5.Tính (-15) + 12 = ? 6.Tính (-25) + 25 = ? 7.Tính : 13 - 17 = ? 8.Tính : (-78) - 9 = ? 9.Tính : ( -24) - ( - 16) = ? 10.Tính : 17 - (-3) = 11.Tính nhanh : (-21) - ( 48 + 52 - 21) = ?
1) -145.(13 - 57) + 57.(10 -145)
2) 17.(15 - 16) + 16.( 17- 20)
3) -38.(25 - 4) + 25.(-4 + 38 )
4) 23.(145 - 17) - 145.(23 - 6)
5) 24.(15 - 4) + 4.(24 - 15)
6) 199.(15 - 17) - 199.(-17 + 5)
7) -39.(5 - 99) + 99.(10 - 39)
Tính hợp lí
1) -145.(13 - 57) + 57.(10 -145)
2) 17.(15 - 16) + 16.( 17- 20)
3) -38.(25 - 4) + 25.(-4 + 38 )
4) 23.(145 - 17) - 145.(23 - 6)
5) 24.(15 - 4) + 4.(24 - 15)
6) 199.(15 - 17) - 199.(-17 + 5)
7) -39.(5 - 99) + 99.(10 - 39)
Bài 1:Tính:
a,3 14/19 + 13/17 + 35/43 + 6 5/19 + 8/13
b,130 25/28 + 120 17/35
c,17 2/31 - (15/17 + 6 2/31)
d,(31 6/13 + 5 9/41) - 31 6/13
e,(17 24/31 - 3 7/8) - (2 38/31 - 4)
g,1/1.2 + 1/2.3 + 1/3.4 + 1/4.5 + 1/5.6
h,1/1.2 + 1/2.3 + 1/3.4 + .........+ 1/49.100
i,1/1.3 + 1/3.5 + 1/5.7 +........+ 1/97.99
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+28+12345678
1.Tính:
a) 13 + 21 . 5 - (198 : 11 -8)
b) 272 : 16 - 5 + 4 . (30 - 5 - 255 : 17)
c) 15 . 24 - 14 . 5 . (145 : 5 - 27)
d) 18 . 3 - 18 . 2 + 3 . (51 : 17)
e) (64 + 115 + 36) - 25 . 8 . 6 . 22 . 3 + 42
f) 15 . 8 - (17 - 30 + 83) - 144 : 6
g) 250 : 50 - (46 - 75 + 54) : 5
h) 13 . (17 - 95 + 83) - 144 : 6
i) 140 - 180 . (47 - 90 + 43) + 7
j) 24 . (15 + 30 + 85 - 120) : 10
2.Tính
a) 22 . 3 - 4 b) 16 - 23 . 2 c) 42 - 4 . 2
d) 33 - 2 . 32 e) 72 - 9 . 22 f) 22 . 3 + 42
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
bài 1:
a) 10\17+5\-13-11\25+7\17-8\13
b) 0,3-93\7-70%0-4\7
c)1\8+1\24+1\48+...+1\2400
d) 3\41-12\17+33\49
-----------------------------
12\41-48\17+132\49