Mental Math
15*5
=75
In a right triangle, which side is opposite the 90° angle?
Hypotenuse
Simplify: i3
= -i
2346 × 6
= 14,076
Where did Mr. Arndt go to college?
Cedarville University
121÷11
=11
Simplify: cos(90°)-sin(90°)
= -1
Simplify: √(-49) + √(-64)
= 15i
4123 × 13
= 53,599
What is Mr. Arndt's room number?
W057
142
=196
A right triangle has legs 5 and 12. What is tanΘ for the angle opposite of the shorter leg?
=5/12
Simplify: √(-8)+2√(-18)
= 8i√2
1234 × 789
= 973,626
What year did Mr. Arndt graduate high school?
2019
30% of 240
=72
A right triangle's hypotenuse is 10ft and a leg is 6ft. What is the angle opposite of 6ft? Round to the tenths place.
= 36.9°
Simplify: (3+2i)(5-i)
= 17+7i
2345 × 1061
= 2,488,045
How many countries has Mr. Arndt visited?
3 (Bulgaria, Germany, and Brazil)
4(3)2+(54÷5)
=161
A 16ft ladder is placed 10ft away from the base of a wall. What is the angle that is formed between the wall and the ladder? Round to the tenths place.
= 38.7°
Rationalize: (2+i)/(3-4i)
= (2+11i)/25
What number is in the hundred-thousands place in 2068 × 7232?
9
How many sisters-in-law does Mr. Arndt have?
How many brothers-in-law does Mr. Arndt have?
4 sisters-in-law
0 brothers-in-law