Panduan kalkulator Classwize Matematik Tingkatan 1...

Bab 1 ( Nombor Nisbah)

Bab 2 (Faktor dan Gandaan)

To determine a prime number

Example: Determine whether each of the following numbers are a prime number.

(a) 48  (b) 113

(a) 48 * If the answer is displayed in the form of prime factorization, then the number has some factors including 1 and the number itself. Answer: Not a prime number because 48 can be divided by number other than 1 and 48 itself.

(b) 113 * If the answer is unchanged, then the number has factors of 1 and the number itself. Answer: Yes, it is a prime number because 113 can not be divide by other numbers except 1 and 113 itself.

 To determine a prime factor of a number

The way of use is the same as in determining prime numbers. 

Example: List all the prime factors of 78.

Thus, the prime factors of 78 are 2, 3 and 13.

 

To determine the Highest Common Factor (HCF)

There are three methods for determining HCF.

(a) Listing common factor

(b) Repeated division

(c) Prime factorization

To find HCF of 30 and 36, use the prime factorization method.

Step 1: Find the prime factor of 30 and 36. Prime factor of 30: \ 2 ´ 3 ´ 5	Prime factor of 36: \ 22 ´ 32 = 2 ´ 2 ´ 3 ´ 3
Step 2: Multiply all the common prime factor.   Thus, HCF of 30 and 36: = 2 ´ 3 = 6

 

To determine Lowest Common Multiple (LCM)

To find the LCM of 8 and 20, use the prime factorization method.

Step 1: Find the prime factors of 8 and 20. Prime factor of 8: \ 23 = 2 ´ 2 ´ 2	Prime factor of 20: \ 22 ´ 5 = 2 ´ 2 ´ 5
Step 2: Multiply all the common prime factor.     Thus, LCM of 8 dan 20: = 2 ´ 2 ´ 2 ´ 5 = 40

 

Bab 3 (Kuasa dan Punca Kuasa)

Use button for enter the value of with power of other than 2 and 3.

Example:

Solve each of the following.