Mental Math
1 X 4
4
21 X 3
63
What is the value of the 6 in 163?
60
How many sides does a triangle have?
3
2.6
4 X 3
12
42 X 4
168
9,000
How many sides do quadrilaterals have?
4
Write 2/10 as a decimal.
0.2
6 X 4
24
154 X 3
462
What is the value of the 3 in 132,146?
30,000
A right angle is equal to how many degrees?
90
Write 0.04 as a fraction.
4/100
7 X 6
42
2,352 X 5
11,760
Round 142 to the nearest ten.
140
A hexagon has how many sides?
6
4.5 + 0.20
4.7
9 X 4
36
6,721 X 4
26,884
Round 479 to the nearest hundred.
500
What is the difference between an acute angle and an obtuse angle?
Acute: Less than 90 degrees
Obtuse: Greater than 90 degrees
1,749 - 283
1,466