Equivalents
Does
78 + 95 = 83 + 90
Yes both = 163
0, 2, 4, 6, 8, 10
+ 2
Helps with times tables and adding
'+'
To join together
Kilo
1000
Ben cooked 6 mini pies each for his family of 6. How many did he cook?
How many and each
The work each show its multiplying. It is repeated adding or multiplying.
Does
3 1/2 = 12/4
No 3 1/2 = 14/4
0, 7, 14, 21, 28, 35
+7
Again helps with adding and times tables
'='
Balance
milli
1000
John has a total of 35 marbles. Jane has 24 marbles. What is the difference between their totals?
Difference between. It is a subtraction
87 + 79 = 80 + 85
No it is 80 + 86
56, 48, 40, 32, 24
-8
'-'
Finding the difference between two numbers
Centi
100
Centimetre is 100 parts of a metre
Kat had 2 bags with 12 lollies in each. She shared them between herself and 3 friends. How many would they each get
each so multiply so 2x 12 = 24
Shared so 24 divided by 4
73 - 15 + 70 - 12
Yes Then do 70 - 10 - 3 = 57
0, 1, 1, 2, 3, 5, 8, 13, 21, 34
The sum of the two numbers before
'x'
Repeated adding
gram
1 thousand of a kilo
1/1000
A kilo broken into 1000 parts called a gram
Dee worked 8 hours a day at $21 an hour for 5 days.
How much did she earn in total?
Total means adding. It needs two lots of repeated adding so is multiplying
548 - 165 = 400 - 17
Yes both = 383
3, 7, 15, 31, 63, 127, 255
The previous number x2 +1
division
Repeated subtraction
fraction
Part of a whole