LMS Prealgebra
Terms
undefined, object
copy deck
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Identify the property:
a * b = b * a - Commutative Property of Multiplication
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Identify the property:
3 * 0 = 0 - Property of zero
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Identify the property:
a + b = b + a - Commutative Property of Addition
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Identify the property:
(a + b) + c = a + (b + c) - Associative Property of Addition
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Identify the property:
(ab)* c = a * (bc) - Associative Property of Multiplication
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Identify the property:
5 * 1 = 5
a * 1 = a - Identity Property of Multiplication
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Identify the property:
5 + 0 = 5
a + 0 = a - Identity Property of Addition
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Rewrite using the Distributive Property of Multiplication:
4(a + 6) - 4*a + 4*6
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Simplify using the Distributive Property of Multiplication:
8(y + 8) + 3 -
8y + 8*8 + 3
8y + 64 + 3
8y + 67 - What is a variable?
- A variable represents a number.
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Write an expression for:
a number increased by eight -
n + 8
any letter is correct -
Write an expression for:
three times a number decreased by 10 -
3n - 10
any letter is correct -
Write an expression for:
three times a number divided by 6 -
3n/6
any letter is correct -
Write an expression for:
six less than a number -
n - 6
any letter is correct -
Write an expression for:
four times a number increased by one divided by two times another number less three -
4n + 1 any two letters are
------ correct
2y - 3 - What is the order of operations?
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parentheses
exponents
multiply & divide left to rt
add & subtract left to right -
Evaluate for c = 3, m = 2:
2c + 5(m - 1) -
2c + 5(m - 1)
2c + 5(2 - 1)
2c + 5(1)
2*3 + 5
6 + 5
11 -
Evaluate for a = 5, b = 7, c = 3
3(a + 2) + b * 6 + c -
3(a + 2) + b * 6 + c
3(5 + 2) + 7 * 6 + 3
3(7) + 7 * 6 + 3
21 + 42 + 3
66 -
Rewrite using the distributive property:
5u + 5y - 5(u + y)
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Simplify:
6(a + 2) + 3 -
6(a + 2) + 3
6a + 12 + 3
6a + 15