estimation
Estimate the product: 49 x 21.
50 x 20=1000
What is the expression of 5 more tha number x?
x+5
Name the property a + b=b+a
a x b=b x a
communitive property
3(x+4)
3x+ 12
x + 7=15
x=8
Round 3.14159 to the nearest tenth.
3.1
Write an expression for the product of 3 and the sum of a numver n and 4
3(n+4)
name the property ( a+b) + c = a + (b + c) ( a x b) c+a x (b x c)
Associative property
5(y-2)
5y- 10
3y= 18
y=6
Estimate the value of 302/ 58
300/60=5
The quotient of a number y and 7, decreased by 2
y/7-2
a x (b + c) = ab + ac
Distributivbe property
2(3x+7)
6x + 14
2x-5= 9
x=7
A pencil cost $1.89 Estimate the cost od 7 pencils
$2 x 7 = $14
Write and expression for twice the difference of a number p and 9
2(p-9)
a x 0= 0
o x a = 0
Multiplicative property of zero
4(2a-5) + 3a
8a - 20 + 3a = 11a - 20
4 (m - 3) = 12
m=6
Estimate the square root of 50 to nearest whole number.
7
Three times the sum of a number z and 6, divided by 2
3(z+6)/2
a + (-a) = 0
Additive Inverse Property
-2 (4x - 6) + 5x
-3x + 12 or 12 - 3x
5p+ 7= 2p + 19
p= 4