Ed tech.ppt
- 1. “Fundamental OperatiOn On integers” additiOn OF integers and subtractiOn OF integers
- 2. pre-requisite cOncepts: “WhOle numbers, expOnents, cOncepts OF integers”
- 3. abOut this lessOn: This lesson focuses on addition of integers using different approaches. It is a review of what you have learned from Grade 6.
- 4. Objectives: In thIs lesson, you are expected to: a. subtract or add Integers usIng; a. number lIne b. sIgned tIles b. solve problems InvolvIng subtractIon and addItIon of Integers and; c. answer the gIven problems correctly.
- 5. lesson proper: I. actIvIty: study the followIng examples, a. addItIon usIng number lIne 1.use the number lIne to fInd the sum of 6 and 5. 2. fInd the sum of 7 and (-3).
- 6. 1. 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 on the number lIne, start wIth poInt 6 an count 5 unIts to the rIght. therefore 6+5=11
- 7. 2. 0 1 2 3 4 5 6 7 8 9 10 3 2 1 On the number line, start frOm 7 and cOunt 3 units gOing tO the left since the sign Of 3 is negative. therefOre (-3) + 7= 4.
- 8. Exercises: ● a.(-5) + (-4) ● b. (-8) + (5) c.(-9) + (-6) d. 10 + (-8)
- 9. generalizatiOn: adding a pOsitive integer n tO m means mOving alOng the real number line a distance Of n units tO the right frOm m. adding a negative integer -n tO m means mOving alOng the real number line a distance Of n units tO the left frOm m.
Editor's Notes
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