Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
to name a whole number in a different way: 28 = 1 ten 18 ones
|
regroup
|
|
|
the answer when subtracting two numbers
|
difference
|
|
|
to give an approximate number or answer
|
estimate
|
|
|
the result of adding numbers together
|
sum
|
|
|
191 + 67 = (191 + 9) + 58 is an exmple of using what strategy
|
breaking apart
|
|
|
numbers can be added in any order
(name the property) |
commutative property
|
|
|
the inverse operation of addition
|
subtraction
|
|
|
the grouping of addends can be changed
(name the property) |
associative property
|
|
|
the inverse operation of subtraction
|
addition
|
|
|
the sum of any number and zero is that same number
(name the property) |
identity property
|
