Mental Math
50 x 10
500
25 / 5
5
10% of 100
10
3(3 + 2) - 2
13
Joan has 10 pencils. If Erin has 5 times as many pencils, how many pencils does Erin have?
50 pencils
200 x 20
4,000
20 x 2 /4
What percent is 100 out of 500
20%
2(10+5)-8+32
16
If you buy 7 dozen eggs how many eggs will you have?
84 eggs
500 x 300
150,000
20 x 20 / 2
3/4
75%
10(-10+9)+ 22
-6
Alex went to the store 20 times last month to buy dominoes. Each time he goes to the store he buys 15 dominoes. How many dominoes did he buy last month?
300
1000 x 500
500,000
750 / 5
150
What percent is 50 out of 250?
20%
48/2 (2+3)
120
Mary has 10 books. Justin has 3 times as many books as Mary. If Alex has 5 less books than Justin, how many books does Alex have?
25 books
700 x 200
140,000
125 x 4 / 2
250
What percent is 300/500
60%
(2 + 4) x 3 + 22
40
You have 15 candy bars and Carson has 20 bars. If Jason has two times as many candy bars as you, how many candy bars in total do you have?
50 candy bars