Tugas matematika kelas 7
Senin tanggal 8 nop 2010
A.Copy and complete the following table
| Open sentence | True Sentence | False Sentence |
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© +5 = 19
O -6 = 11
M x M = 169
Q is a factor of 12
|
14 + 5 = 19
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13+5 = 19
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B. Find the Subtitutes for the variables so that the sentences become true !
a. There are X weeks in one year
b. p is a factor of 16
c. Z is a number between 20 and 35 wich is devided out by 3.
d. P is an even prime number
C.For Question 1 to 4,find their solusion
1. One week consist of x days
2. A cube is formed by X congruent squares.
3. In one year there are x months each of which lasts for 31 days.
4. The number 30 has x prime factors.
D.Find tha solution of each of the following open sentences!
5. X is a variable which takes on the number 1,2,4,6,8 and 10
6. ( x + 6 ) is less than 15
7. 3x = 27
8. 2 x X = X2
9. X + 3 = 11-X
