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Subtracting Integers Subtracting Integers To subtract integers, add the opposite of the second integer. Examples: 8 − 3 = 8 + -3 = 5 9 − (-5) = 9 + 5 = 14 -8 − 3 = -8 + -3 = -11 -7 − (-2) = -7 + 2 = -5 -4 − (-4) = -4 + 4 = 0 Let’s learn to subtract integers! Subtracting Integers To subtract integers, add the opposite of the second integer. Examples: 8− 3= 5 9 − (-5) = 14 -8 − 3 = -11 -7 − (-2) = -5 -4 − (-4) = 0 Now let’s talk about 0. Zero subtracted from any integer is that integer. Example: +9 − 0 = +9 -6 − 0 = -6 Subtracting Integer Rules To subtract you will add the opposite of the second integer. Same signs – add and keep that sign ex: 5 – -8 = 5 + 8 = 13 ex: -5 – 8 = - 5 + -8 = - 13 Different signs – subtract and use the larger number’s sign ex: -8 – -5 = - 8 + 5 = - 3 ex: 8 – 3 = 8 + - 3 = 5 Now let’s practice 1. 2. 3. 4. 5. -10 - -4 = -6 -4 - -9 = 5 2 - 9 = -7 6 - 7 = -1 -14 - -15 = 1 6. -10 - -14 = 4 7. -4 - 5 = -9 8. 6 - -3 = 9 9. -10 - -8 = -2 10.-16 - -6 = -10 If subtraction is the operation sign that you get, Then the second number’s sign turns to its opposite. Once the sign has been adjusted and the problems been revised, Look at the signs on the numbers use the rules we’ve already tried. Chorus: Same-Add Different-Subtract Take the sign of the bigger number. (Repeat) Add the Opposite Add the Opposite Keep-Change-Change Keep-Change-Change Let’s test your knowledge…