420-22 = ?
318
18 x 5 = ?
90
326 + 274 = ?
600
72 ÷8 = ?
9
938 + 181 = ?
1,119
I have 16 pens. You have 12 pens. How many do we have in all?
28 pens
12-4+9 = ?
17
5 · 6 / 10 = ?
3
23 · 57 = ?
1331
3 · 8 - 4·10 = ?
-16
2/5 + 7/3 = ?
41/15
2/9 - 4/3 = ?
- 10/9
lower common multiple
mcm(25, 15) = ?
75
Thirteen people are in our math group. How many hands are there? How many fingers?
26 hands and 130 fingers
greatest common divisor
MCD(24,18) = ?6
6:2:3+5·32·2-7·3 = ?
300
You have 28 toy cars. I have 46 toy cars. How many more cars do you need to have the same amount that I do?
18 more cars
I have 52 toy car wheels. How many cars can I build with these wheels?
13 cars
27-7-[(2·3):(3·2)] = ?
19
[3 - (4/3)] · (1/4) = ?
5/12
(2/5) · (1/3) - (3/5) = ?
-7/15
[2 + (1/5)] · (3/2)
33/10
(1/5) · (3/2) : (2/3) = ?
9/20
65/60 = 13/12
I baked 2 dozen cupcakes. Each cupcake had 3 cherries on top. I ate the cherries off 2 of the cupcakes. How many cherries are left?
30 cherries