Add
50 + 30
80
Round to the nearest ten
68
70
another word for "number"
digit
93 + 7
100
What place is the 7 in 4,472
Tens
70
47 + 33
80
Round to the nearest ten
652
650
Write the number in standard form:
three thousand, four hundred ninety-one
3,491
60 + 30
90
parentheses ( )
452 + 225
677
Round to the nearest hundred
478
500
600 + 70 + 2
228 + 149
377
To order or group numbers so they are easy to add in your head is called...?
mental math
756 + 345
1,101
Round to the nearest hundred
681
Which addition property is shown in the number sentence?
32 + 8 = 8 + 32
Commutative Property of Addition
6,499 + 543
7,042
Check for ________ to ensure your answer makes sense
reasonableness
5678 + 2345
8,023
Round to the nearest hundred
329
300
Which addition property is shown in the number sentence:
(4 + 6) + 3 = 4 + (6 + 3)
Associative Property of Addition
$8,285 + $1,456
9,741
The number to be solved for in a number sentence
unknown