Estimating Sums
Rounding
Regrouping
Name that Property
Vocabulary
100
Estimate the sum of 36+22=
What is 40+20=60
100
46 round to the nearest 10?
What is 50
100
66+4
What is 70
100
The addition property of 0+789=789
What is Identity
100
A number close to its actual value.
What is estimate
200
Estimate the sum of 736+142= (hundreds)
What is 700+100=800
200
745 rounded to the nearest 100?
What is 700
200
73+19=
What is 92
200
Name the property of addition. 7+(3+9)=9+(3+7)
What is Associate
200
the property of addition that states when you add zero to any number, the sum is that number. 36+0=36
What is Identity Property
300
Estimate the sum of 636+334=? Round each addend to its greatest place value.
What is 600+300=900
300
5,899 rounded to the nearest 10?
What is 5,900
300
329+34=
What is 363
300
The name of the property(ies) of addition. 10+(0+9)=9+(0+10)
What is Associative and Identity
300
The property that states that you can change the order of the addends and still get the same sum.
What is Commutative Property
400
Estimate the sum of 1637+4584=? Round each addend to its greatest place value.
What is 2000+5000=7000
400
670 rounded to the great place value?
What is 700
400
508+426=
What is 934
400
The sum of 36+7=7+36 and identify the property.
What is 43 ...Commutative
400
The missing number or what you are solving for in a problem.
What is the unknown
500
Estimate the sum of 963+84=? Round each addend to the greatest place value.
What is 1000+100=1100
500
5,874 rounded to the greatest place value?
What is 6000
500
4565+5679=
What is 10,244
500
The sum of (500+80)+60=(60+500)+80 and identify the property.
What is 640 associative
500
To use place value to exchange equal amounts when renaming a number.
What is Regrouping
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