Properties
Which number would make the equation true?
12 + __ = 15 + 12
What property is this?
15
Commutative property of addition
What is 421 rounded to the nearest ten?
420
Look at the numbers below
10, 20, 30, 40, __
Think about the pattern, what do you think is the next number?
50
The pattern is skip count by 10
What is the sum of 145, 213, and 178?
536
The Rodriguez family drives 229 miles on Friday and 172 miles on Saturday. How many total miles did they drive?
401 miles
Which number would make the equation true?
3 + ( 7 + 8 ) = (3 + __ ) + 8
What property is this?
7
Associative property of addition
What is 268 rounded to the nearest ten?
270
Look at the numbers below
3, 5, 7, 8
Think about the pattern, what do you think is the next number? What is the pattern?
10
The pattern is adding 2
Find 420 – 177
243
Sara collected 345 seashells and her brother collected 127 seashells. How many seashells did they collect in all?
472 seashells
Which number would make the equation true?
30 + __ = 30
What property is this?
0
Identity property of addition
What is 122 rounded to the nearest hundred?
100
Look at the numbers below
5, 10, 15, 20 ____
Think about the pattern, what do you think is the next number? What is the pattern?
25
The pattern is skip counting by 5
Find 585 – 187
398
Michelle collected 291 stickers last month. Today she collected 85 stickers and yesterday she collected 77 stickers. How many stickers does she have now?
453 stickers
Which number would make the equation true?
193 + ( 27 + 82 ) = (___ + 27 ) + 82
What property is this?
193
Associative property of addition
What is 759 rounded to the nearest hundred?
800
Look at the numbers below
23, 26, 29, 32, ___
Think about the pattern, what do you think is the next number? What is the pattern?
35
The pattern is to add 3 each time
Round to the nearest ten to estimate the difference of 789 – 371.
418 --> 420
Elena has $265. She buys a jacket that costs $107. How much money does she have left?
$158
Which number would make the equation true?
262 + 179 = ____ + 262
What property is this?
179
Commutative property of addition
Maria said 91 rounds to 100. Did she round to the nearest ten or hundred?
Hundred
Look at the numbers below
56, 58, 60, 62, ____
Think about the pattern, what do you think is the next number? What is the pattern?
64
The pattern is to add 2 each time
Estimate the sum of 271 and 582 by rounding to the nearest hundred.
853 ---> 900
John read 211 pages of his book today and 175 pages yesterday. About how many pages has he read?
400 pages OR 390 pages