Lesson 1 3 MultDiv Real s The first
- Slides: 14
Lesson 1 -3: Mult/Div Real #s The first slides here review adding, subtracting, multiplying, and dividing fractions. You do not have to take notes on these slides. We will do a few practice problems in class.
Add & Subtract Fractions 1. 2. 3. 4. 5. Find the common denominator. Make equivalent fractions using the new common denominator. Add/sub the numerators. Denominator stays the same. Simplify/reduce. Leave improper fractions as is. Hooray!
Examples 1
2
Multiply Fractions & Mixed #s 1. 2. 3. 4. 5. Change any mixed #s into improper fractions. Multiply numerators. Multiply denominators. Simplify. (You can also simplify before you multiply. ) Leave improper fractions as is.
Examples 1 2 2 1
Divide Fractions & Mixed #s 1. 2. 3. 4. 5. Change any mixed #s into improper fractions. Find the reciprocal of the 2 nd fraction (the divisor), rewriting the problem as a multiplication problem. Multiply. Simplify. (You can also simplify before you multiply. ) Leave improper fractions as is.
Examples 1 2 8 5
Decimal Operations - Reminders Multiplication ◦ Line up digits as in whole # mult. ◦ After multiplying as usual, count up total places behind decimal point, and move decimal that number of places.
Decimal Operations - Reminders Division: ◦ Shift decimal in the divisor (outside #) to the right so that you are dividing by a whole #. Shift the decimal in the dividend the same # of places. Now divide as usual. ◦ Keep dividing until it ends or repeats.
Now in your Know It Notes: Reciprocal: numerator and denominator change place (fraction flipped over) Multiplicative inverse: a number and its reciprocal are called multiplicative inverses A number times its reciprocal = 1
Inverse Prop. Of Multiplication The product of a real # (but not zero) and its reciprocal is 1. Algebraically: For a≠ 0,
Integer Rules Positive # • Positive # = Positive # Negative # • Negative # = Positive # (Same signs = positive answer) Positive # • Negative # = Negative # • Positive # = Negative # (Opposite signs = neg answer) Same rules for division.
Important Stuff about Zero times a number = zero Zero divided by a number = zero A number divided by zero = undefined ◦ How could you make zero groups of something? It is not possible, so we get “undefined” instead.
- Hình ảnh bộ gõ cơ thể búng tay
- Frameset trong html5
- Bổ thể
- Tỉ lệ cơ thể trẻ em
- Chó sói
- Tư thế worm breton là gì
- Chúa yêu trần thế alleluia
- Các môn thể thao bắt đầu bằng tiếng nhảy
- Thế nào là hệ số cao nhất
- Các châu lục và đại dương trên thế giới
- Công thức tính thế năng
- Trời xanh đây là của chúng ta thể thơ
- Mật thư tọa độ 5x5
- Làm thế nào để 102-1=99
- độ dài liên kết