The Grade 7 Math review

Integers are basically positives (+), negatives (-), and zeropairs.

What I remembered:

-Integers can be shown on a number line.

-The rhyme "When subtracting something that isn't, there use a zero pair"

The * question we have to do:

(-3)-(-7)=

-3-7=

\

3-7=

3+7=

Chapter 2 Multiplying Integers:

Examples:

(+2)x(+3)=6

It basically means you have 2 groups of 3.

2x(-3)=(-6)

When you have a negative on the right, it is just the same thing except the number is negative

**(remember + and a - make a -, a - and a - make a +)**

(-2)x(+3)=-6

-2x(-3)=6

Chapter 3:

Dividing Integers

Partitive Division:

Partitive division is how many groups of something are in something. We use a number line to show this.

Quotative Division:

This really just means "How do you share 6 with 2?"

The multiplicative inverse can helps us solve division questions because if we divide 6 by 2 we have 3. Now 3, we know that 3x2 equals 6 or 2x3 equals 6.

Chapter 4 :Order of Operations with Integers

(+5) x (-3) + (-6) ÷ (+3)=

[(+5) x (-3)] + [(-6) ÷ (+3)]=

(-15) + (-2) = -17

(-15) + (-2) = -17

Use BEDMAS :)!

BEDMAS stands for Brackets,Exponents,Division, Multiplication,Addition,Subtraction.

1. First off, put square brackets that need to be done first (Example 4/2)

2. Solve what you bracketed then rewrite what you have.

3. Now solve the equation from left to right using BEDMAS! :^)

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