Number Sense
This is the value of 7 × 3.
21
1/2 as a decimal is
0.5
A shape with 3 sides
A triangle
In the expression 5x, the letter x is called this
Variable
You have 5 apples and buy 3 more. How many apples do you have?
8 apples
This number is the only even prime number.
2
the top number in a fraction is called
a numerator
A 4‑sided shape with all equal sides.
Square
Solve: x + 4 = 10.
X= 6
A pizza has 8 slices. You eat 2. How many are left?
A number that can be divided by 2 with no remainder is called this.
a Even Number
.25 as a fraction is
1/4
The distance around a shape.
perimeter
This is the value of 3x when x = 2.
3(2)=6
A book costs $10. You have $25. How much change will you get?
$15
This is the value of 81 ÷ 9.
= 9
comparing fractions with different denominators is looking for
a common denominator
a right angle is also known as a
90 degree angle
Solve: 2x = 18.
2(9)=18
A class has 20 students. Half are boys. How many boys?
10 boys
A number that has two factors is called....
Prime number
3/4 written as a decimal is
.75
A triangle with all sides different lengths
scalene
Solve 4x=28
4(7)=28
You walk 3 miles each day for 4 days. How many miles total?
12 miles