Grade 4 - Progress in Mathematics

250 Chapter 7

Combinations

7-6

NETS 8997 WHS Gr4 PE Progress in Math8204-6 250-251 JPI 08-05-05 edit bjj 12 13 05 4th PP

Suppose you went to Didiʼs

Diner. How many different

ways could you order the

Early Bird Special?

To find how many different

ways, draw a tree diagram.

Then count the combinations.

Main Dish Side Dish Vegetable Combination

broccoli chicken, potato, broccoli

potato spinach chicken, potato, spinach

chicken carrots chicken, potato, carrots

broccoli chicken, rice, broccoli

rice spinach chicken, rice, spinach

carrots chicken, rice, carrots

broccoli fish, potato, broccoli

potato spinach fish, potato, spinach

fish carrots fish, potato, carrots

broccoli fish, rice, broccoli

rice spinach fish, rice, spinach

carrots fish, rice, carrots

You could order the Early Bird Special

12 different ways.

You can also find the number of combinations

by multiplying.

Main Dish Side Dish Vegetable Combinations

2  2  3  12

There are 12 combinations.

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