Math revision by

Integers Review

sneil82 — 2022-03-14 05:46:12 UTC

Think of maths being racist ig, being different is negative and being the same is positive.

Integer Multiplication

sneil82 — 2022-03-14 05:46:38 UTC

Simplify first then multiply from left to right. Eg 5x5 = 25

Integer division

sneil82 — 2022-03-14 05:47:00 UTC

Dividing, eg. 2 goes into 2 once

BIDMAS

sneil82 — 2022-03-14 05:47:16 UTC

Brackets
Indices
Division
Multiplication
Addition
Subtraction

Integer Laws

sneil82 — 2022-03-14 05:47:31 UTC

Any number (but 0) to the power of 0 = 1
If the bases being divided are the same, subtract the indices
If the bases being multiplied are the same, ass the indices.

Decimals and Fractions

sneil82 — 2022-03-14 05:47:51 UTC

When going from decimals to fractions remember your units.
When going from fractions to decimals the top number of the fraction goes under the divide thing and the bottom number is what you are dividing with.

Operations with decimals

sneil82 — 2022-03-14 05:48:19 UTC

-9.74 + - 8.27 step 1
= -9.75-8.27 step 2
= -18.01
+9.74
8.27

-3.98+4.42
=0.44

4.42
- 3.98
=0.44

-5.8 x -6.2
= 35.96

58
X 62

116
+ 3480
3596

-0.015 divide 0.2
=-0.075

Operations with fractions

sneil82 — 2022-03-14 05:48:34 UTC

2 ‘-‘ would be an even final answer. If there’s a whole number next to fraction simplify. X the bottom numbers for + so there the same. Show all working. Simplify final answer.

Irrational-Rational numbers

sneil82 — 2022-03-14 05:49:32 UTC

Rational- Any number that can be expressed as a fraction.

Correct results. Pre.Test

sneil82 — 2022-03-14 07:24:09 UTC

Revision sheet answers

sneil82 — 2022-03-15 06:42:03 UTC

(Tap and Zoom in)
When answering worded questions remember a capital letter and a full stop or it does not count. Have as much detail as possible and respond to the question in detail with examples. Eg. Bob finished farming eggs and finished with TWO , E G G S. Or when identifying errors in ‘someones’ working explain which column it was and what the mistake was and should have been in detail.

sneil82 — 2022-03-15 06:48:37 UTC

Positive and Minus = Minus
Minus and Positive - Minus
Positive and Positive = Positive
Negative and Negative = Negative

sneil82 — 2022-03-15 06:52:20 UTC

(-2)^3
Brackets kill ‘-‘ when doing integers/to the power of…
= 2x2 3times
=8

Think of it like Money/Owe money

sneil82 — 2022-03-15 06:56:19 UTC

-2-2 is not 2- - 2
=-4 not 4
Because they are not ‘touching’
But if it’s -2 + 2 it’s the similar to a number line = 0
Remember it’s a big number line < Negatives0Positives >
Work left to right but BIDMAS still applies

Working with Left to Right BIDMAS example

sneil82 — 2022-03-15 11:57:26 UTC