Addition
3+3
6
4-3
1
3*2
6
Write the ratio of 10 pancakes to 9 waffles
10:9
3-9
-6
24+30
54
49-7
42
5*20
100
In Lucy’s class there are 12 boys and 18 girls. Write the ratio of girls:boys in its simplest form.
12:18 or 2:3
1-(+2)
-1
30.12+9.2
39.32
54-25.12
28.88
32.9*30.2
993.58
You know that to make 20 pancakes you have to use 2 eggs. How many eggs are needed to make 100 pancakes?
10
-23-(+42)
-65
3,204+7,690
10,894
45,005-15,609
29,396
3442*3
10,326
Nicholas drinks 8 ounces of milk for every 5 cookies he eats. If he eats 20 cookies, how many ounces of milk does he drink?
32
500-(+500.1)
-0.1
30560.15+56903.210
46789.23-42340.14
4,449.09
3201.09*23.4
74905.506
A man can type 24 papers in 8 minutes. Find the unit rate.
3 papers/minute
-1234-(-450.22)
-783.78