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100
Use mental math to add. 96 + 73 + 4 =
173
100
Round to the tens place. 4,526
4,530
100
Use mental math to add these numbers. 19 + 34 =
53
100
Use mental math to subtract. 68 - 29 =
39
100
Round to the ten thousands place. 427,841
430,000
200
Round to the tenths place. 0.472
0.5
200
Subtract these decimals. 34.49 - 12.619 =
21.871
200
Use mental math to add. 22 + 46 + 4 =
72
200
Subtract these decimals. 16.82 - 5.21 =
11.61
200
Use mental math to subtract. 201 - 99 =
102
300
This is an example of which property? 3 + 4 = 4 + 3
Commutative. I can add numbers in any order and get the same answer.
300
Define the Associative Property.
The associative property states that I can change the groups of numbers and get the same answer.
300
Define the commutative property of addition.
The commutative property of addition states I can add numbers in any order and get the same answer.
300
Round to the hundreds place. 677
700
300
Round to the hundredths place. 5.028
5.03
400
Add these decimals. $8.23 + $64.10 =
$72.33
400
This is an example of which property? 12 + (7 + 28) = (12 + 7) + 28
Associative. I can change the groups of numbers and get the same answer.
400
Subtract these decimals. $43.80 - $16.00 =
$27.80
400
Round to the hundredths place. 23.009
23.01
400
Add these decimals. 9.001 + 1.999 =
11.000
500
Subtract these decimals. 43.905 - 7.526 =
36.379
500
Add these decimals. 1.03 + 0.6 =
1.63
500
Solve. The pyramid of Khafre measured 143.5 meters high. The pyramid of Menkaure measured 65.5 meters high. What is the difference in the heights of these two pyramids?
143.5 - 65.5 = 78 meters
500
Solve. At a flower shop, Teri sees that roses are $3 each, carnations are $4 for 3 flowers, and tulips are $4 for 4 flowers. She buys 3 roses and 3 carnations. She has $20. How much change does Teri get back?
$9 (roses) + $4 (carnations) = $13 spent $20 - $13 = $7 change Teri gets $7 back.
500
Add these decimals. $271.90 + $34.22 =
$306.12