In a library, there are 12 books in each of the 4 shelves of a rack, but Jamie takes away 3 books from each of the two shelves. How many books are there now?
12 x 4 - 3 x 2
15
Little Jane and 5 adults came to La Foret Restaurant. On the dinner table, there are two plates for each adult and only one plate for little Jane. How many plates are on the table?
5 x 2 + 1
15
A city has 26 courier service offices. In 20 of the offices, there are 10 workers each. The remaining 6 offices have 8 workers each. How many total workers are there?
20 x 10 + 6 x 8
15
Make the number 24 from the following four numbers using only the four operations. You may use each number once.
4 4 4 4
4 x 4 + 4 + 4
25
Make the number 24 from the following four numbers using only the four operations. You may use each number once.
4 4 7 12
(12-7)×4+4
15
0.1 x (768 + 895) VS 768 + 895
<
5
(3.9 x 8) + (3.9 x 4) VS 3.9 x 15
<
15
(34 + 25) ÷ 1/4 VS (34 + 25) x 4
=
15
Augusto earned $50 last month mowing lawns. Peiyi earned $40 less than twice as much as Augusto. How much did Peiyi earn?
2 x 50 - 40
15
Tao has 48 baseball cards. His friend, Kian, has 93 baseball cards. Lakeo has 14 less than the total that Tao and Kian have. How many baseball cards does Lakeo have?
48 + 93 - 14
15
To find the age of Jeanna’s grandmother, begin with 100 and subtract the product of the ages of Jeanna’s brothers (6 and 8). How old is Jeanna’s grandmother?