Adding Decimals
What is the sum of 7.535 + 29.02
36.555
What is the difference of 45.34 - 6.00
39.34
Estimate 89.2 to the nearest whole number
89
Herman bought a sweater for $28 and a shirt for $13. Which is a way to find out how much change he would get from $50?
A. Add 50 to the difference of 28 and 13
B. Subtract the difference of 28 and 13 from 50
C. Subtract the sum of 28 and 13 from 50
C
To add 40 + 75 + 25, Crystal first added 75 and 25. What property did Crystal use to add mentally?
Commutative Property
What is 45.3 + 34.44
79.74
What is the difference between 67.9 - 45.4
22.5
Estimate 345.5 to the nearest whole number
346
Deanna bought 2 caps for $9 each and 2 belts for $13 each. How much did she spend in all?
$44
If Miss Anthony adds (85 + 30) +20, then 85 +
(30 +20), which property is she using?
Associative
What is the sum of 344.1 + 56.4
400.5
500.76 - 345.87
154.89
What is an estimate for:
98.4 - 46.8 = ?
50
Colleen bought 2 sweaters for $23 each. How much change did she get from a $50 bill?
$4
Which property involves numbers moving around?
Commutative
What is the sum of 8.456 + 8.456?
16.912
987 - 564.45
422.55
Which number, when rounded to the nearest hundredth is 30.86?
A. 30.861
B. 30.867
A
If the art club bought one of each item on the list, ABOUT how much did they spend?
Beads: $1.89
Yarn: $2.15
Glitter: $4.49
Felt: $1.12
$9
Which property includes regrouping numbers?
Associative
What is the sum of 3,456 + 300.45?
3756.45
Which difference is about 10?
A. 70.9 - 58.7 = ?
B: 52.5 - 26.8 = ?
A
Which number, when estimated to the nearest tenth is 87.9?
A. 87.95
B. 87.87
B
Jim has a $100 bill. He buys 2 pairs of pants for $25 each, and 1 pair of sunglasses for $20. How much change will he get back?
$30
How do math properties help us?
They make math easier!