3) Decomponha os números em fatores primos
a) 144
b) 315
c) 440
d) 312
e) 360
f) 500
g) 588
h) 680
i) 1458
j) 3150
l) 9240
m) 8450
Soluções para a tarefa
b- 315 /3 105/3 35/5 7/7 = 3x3x5x7= 315
c-440/2 220/2 110/2 55/5 11/11 = 2x2x5x11=440
d -312/2 156/2 78/2 39/3 13/13 = 2x2x2x3x13= 312
e - 360/2 180/2 90/2 45/3 15/3 5/5 =2x 2x2x3x3x5= 360
f - 500/2 250/2 125/5 25/5 5/5 = 2x2x5x5x5= 500
g - 588/2 294/2 147/3 49/7 7/7 = 2x2x3X7X7 =
h- 680/2 340/2/ 170/2 85/5 17/17 = 2x 2x2x5x17=
i - 1458/2 729/3 243/3 81/3 27/3 9/3 3/3 =2x3x3x3x3x3x3= 1458
j - 3150/2 1575/3 525/5 175/5 35/5 7/7 = 2x3x3x5x5x7= 3150
l- 9240/2 4620/2 2310/2 1155/3 385/5 77/7 7/7 =2x2x2x3x5x7x11 = 9240
m- 8450/2 4225/5 845/5 169/13 13/13 = 2x5x5x13x13 = 8450
Resposta:
A - 114 / 2
72 / 2
36 / 2
18 / 2
9 / 3
3 / 3
1 _____
2×2 ×2×2×3×3 = 114
B - 315 / 3
105 / 3
35 / 5
7 / 7
1 _________
3 ×3×5×7 = 315
c - 440 / 2
220 / 2
110 / 2
55 / 5
11 / 11
1 ________
2 ×2×2×5×11 = 440
D - 312 / 2
156 / 2
78 / 2
39 / 3
13 / 13
1 _________
2 ×2×2 × 3×13 = 312
E - 360 / 2
180 / 2
90 / 2
45 / 3
15 / 3
5 / 5
1 _______
2 ×2×2×3×3×5 = 360
F - 500 / 2
250 / 2
125 / 5
25 / 5
5 / 5
1 ___________
2 ×2×5×5×5 = 500
G - 588 / 2
294 / 2
147 / 3
49 / 7
7 / 7
1 _________
2 ×2×3×7×7 = 588
H - 680 / 2
340 / 2
170 / 2
85 / 5
17 / 17
1 ___________
2×2×2×5×17 = 680