Mental Math 6

60 x 8 =

 $1-_{\ \ \ \ \ \ \ \ \ \ \ }=\ 0.72$  

 $\frac{2}{3}\ of\ 24$  

10 x (7 + 6)

Find the value of y if y - 8 = 15

What is this part of the circle called?

• diameter

• radius

• circumference

• sector

 $4\ \frac{1}{4}+3+5\ \frac{1}{2}=$  

In a class, 4/7 of the children like football. What fraction do not like football?

I am a triangle with 1 obtuse and acute angles. Who am I?

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What are the next two numbers?

1, 3, 6, 10, 15, 21, ___, ___,