Locos

Proyecto matemáticas

Parcial:
Examen – 50%
Cuaderno – 10%
Tareas – 10%
Participación – 20%
Auto evaluación - 10%

1er. parcial – 25%
2do. parcial – 25%
3er. Parcial – 25%
SEMESTRAL – 25%
Total – 100%

RESTA:
I. 26 – 81 = -55
II. -92 + 39= -55
III. 47 – 92 = -45
IV.-76 – 89 = -165
V. 24 – 73 = -49
VI. -68 + 39 = -29
VII. 14 – 82 = -68
VIII. -67 – 56 = -123
IX. 26 – 73 = -47
X. -48 + 19 = -29

I. 34 – 92 = -58
II. -77 + 29 = -48
III. 46 – 83 = -37
IV. -58 – 76 = -134
V. 17 – 62 = -45
VI. -87 + 28 = -59
VII. 35 – 91 = -56
VIII. -74 – 87 = -161
IX. 29 – 62 = -33
X. -93 + 29 = -64

21-agosto-2012LEYES DE LOS SIGNOS:
Signos iguales dan mas
(+)(+)=+
(-)(-)=+

Signos distintos dan menos
(+)(-)= -
(-)(+)= +

(-6)(7)= -42

EJERCICIOS:
1. -7-2(9-6(7-11)-15)-36
=-79

2. -6-5(4-7(-12+7)-18)+36
=75

3. -9-3(4-6(5-2(-12+8)-11)-24)+32
=119

4. -7-5(9-2(5-6(7-11)-21)+15)-12
=-59

5. 2(7-4(5-3(8-10)-4(5-7(9-13)-25)-15)+12)-15
=323

6.-6-8(5-4(7-3(5-7(6-3)-4(5-8(3-7)-31)+25)-13)+14)-17
=1073

7. -5-2(4-3(6-5(9-2(7-11)-2(4-3(-12+8)-15)-4)+6)-11)+13
=226

23-agosto-2012
FRACCIONES:
1. 7/3 + 6/3 = 13/3
2. 6/4 + 12/4 = 18/4 = 9/2
3. 12/6 + 4/6 = 16(6 = 8/3
4. 5/6 + ¾ = 10+9/12 = 19/12
5. 7/8 + 3/6 = 21+12/24 = 33/24 = 11/8
6. 8/10 + 9/15 = 24+18/30 = 42/30 = 21/15 = 7/5
7. 4/6 + 5/8 + 7/12 = 16+15+14/24 = 45/24 =15/8

MAXIMO COMUN DIVISOR Y MINIMO COMUN MULTIPLO
1. 8, 12 2
4, 6 2
2, 3 2
1, 3 3
1

Mcd = 22 = 2-2 = (2)(2) = 4
Mcm = 23 X 3 = 24
8 8, 16, 24, 32, 40, 48, 56, 72, 80, 88,….
12 12, 24, 36, 48, 60, 72, 84, 96,….Son múltiplos

2. 16, 24 2
8, 12 2
4, 6 2
2, 3 2
1, 3 3
1
M.C.D = 23= 8
M.C.M= (16) (3)=48

EJERCICIOS:
1. 18, 24 2
9, 12 2
9, 6 2
9, 3 3
3, 1 3
1

M.C.D= (2) (3) (5)= 30
M.C.M= 600

2. 36, 48 2
18, 24 2
9, 12 2
9, 6 2
9, 3 3
3, 1 3
1

M.C.D=(2)(2)(3)= 12
M.C.M= 144

3. 120, 150 2
60, 75 2
30, 75 2
15, 75 3
5, 25 5
1, 5 5
1

M.C.D= (2)(3)(5) = 30
M.CM= 600

FRACCIONES:
* 5/12 + 3/16 = 20+9/48 = 29/48
* 7/18 + 5/1 = 14+15/36 = 24/36
* 4/6 + 5/9 = 12+10/18 = 11/9
* 8/16 + 6/18 = 72 +48/144 = 5/6
* 7/12 + 5/6 = 28+15/48 = 43/48
* 5/24 + 7/18 = 15+28/72 =43/72
* 7/16 + 3/18 = 63+24/144 = 87/144 = 29/48
* 4/9 + 5/12 = 16+15/36 = 31/36
* 3/12 + 4/18 + 5/16 =36+32+45/144 = 113/144

Ejercicios:
* 5/6 + 4/12 + 5/8 = 20+8+15/24 = 43/24
* 3/16 + 5/14 + 4/18 = 189+360+224=1008 = 773/1008
* 5/24 + 6/18 + 4/12 = 15+24+24/72 == 63/72 = 7/8
* 7/8 + 8/6 + 9/10 = 105+160+108/120 = 373/120
* 4/16 + 3/12 + 5/8 = 12+12+30/28 = 54/48= 27/24 = 9/8
* 1800/2400 + 2700/3600 = 7200+5400/7200 = 128/72 = 64/36 = 32/18 = 16/9
* 2400/1600 + 3500/2000 = 3/2 + 7/4 = 6+7/4 = 13/4
* 3600/1800 + 2500/3000 = 12/6 + 3/6 = 17/6
* 3600/4800 + 2400/5400 = 3/4 + 4/9 = 27+16/36 = 43/36
* 1200/3600 + 2400/4800 = 1/3 + 1/2 = 2/6 + 3/6 = 5/6
* 4900/4200 + 7200/5600 = 7/6 + 9/7 = 49+54/42 = 103/42
* 4000/64000 +5400/4800 = 5/8 + 9/8 = 14/8 = 7/4
* 3500/6300 + 2400/3600 = 5/9 + 2/3 = 5+6/9 = 11/9
* 3600/4800 + 2200/4000 = 6/8 + 22/40 =30 + 22/40 =53/40 = 26/20= 13/10

Ejercicios:
* 1200/2400 – 3500/4000 = 1/2 – 7/8 = 4-7/8 = -3/8
* 4200/3600 – 1800/1600 = 7/6 – 9/8 = 56-63/48 = -7/48
* 1600/1200 – 2500/1500 = 4/3 – 5/3 = -1/3
* 6300/4800 – 3200/3600 = 21/16 – 8/9 = 189-128/144 =...