Probability Test Review Worksheet for Grade 2 Math

Probability Test Review Worksheet for Grade 2 Math

Probability Test Review Worksheet focuses on single event probability, basic counting principles, and the distinction between inclusive and mutually exclusive events. Designed for Grade 2 math students, it includes various exercises on calculating probabilities from names, cards, and spinners. The worksheet also covers independent and dependent events with practical examples involving marbles and card draws. This resource is ideal for educators preparing students for assessments in probability concepts and applications.

Key Points

  • Includes exercises on single event probability with names and cards.
  • Covers basic counting principles for ice cream shop orders and car options.
  • Explains inclusive vs. mutually exclusive events with practical examples.
  • Features independent and dependent events through marble and card scenarios.
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Common Core Math 2 Name: _________________________
Probability Test Review Worksheet 2
Single Event Probability
One of these names is to be drawn from a hat. Determine each probability below:
Mary Jenny Bob Marilyn Bill Jack Jerry Tina Connie Joe
1) P(4-letter name) = _____________ 2) P(name starting with B) = ____________
3) P(name starting with T) = __________ 4) P(7-letter name) = ______________
5) P(name starting with S) = __________ 6) P(name ending with Y) = _____________
One of these cards will be drawn without looking.
7) P(5) = ________ 8) P(J) = _________ 9) P(a number) = _________
10) P(4) = ________ 11) P(T) = _________ 12) P(a letter) = __________
One card is drawn from a well-shuffled deck of 52 cards. What is the probability of drawing…
13) P(ace) = ________ 14) P(face card – K, J, Q) = _________
15) P(a red 10) = ________ 16) P(NOT a diamond) = ______________
A spinner, numbered 1–8, is spun once. What is the probability of spinning…
10
4
7
J
S
9
10
2
M
5
4
J
1
2
3
7
6
5
4
8
17) an EVEN number? _________ 18) a multiple of 3? ___________
19) a PRIME number? _________ 20) a 9? ____________
Basic Counting Principle
21) You go to an ice cream shop and take a look at the menu before ordering. What are the possible
combinations of your order if you can get a cup or cone, single, double, or triple scoop, chocolate, vanilla,
strawberry, or swirl, and with or without whip cream?__________________________
22) You go to buy a car from a used lot. The only options available for the 6 different models on the lot
are: automatic or manual, 3 different types of stereo equipment, with or without a sunroof, and with or
without AC. How many different options do you have?________________________
Inclusive vs. Mutually Exclusive Events
For any event A, P(A) + P(A’) = _______, that is P(A’) = ______- P(A).
30) Suppose that an event A has probability of
3
8
. What is P(A’)? ______________
31) Suppose that the probability of snow is 0.58. What is the probability that it will NOT snow? _____
If A and B are mutually exclusive events, then P(A or B) = P(A) + P(B).
and
If A and B are inclusive events, then P(A or B) = P(A) + P(B) – P(A
I
B).
A card is chosen from a well-shuffled deck of 52 cards.
What is the probability that the card will be:
32) a king OR a queen? ______________________
33) a red jack OR a black king? _______________________
34) a face card OR a card with a prime number? ______________________
35) an even card OR a red card? ____________________
36) a spade or a jack? ________________________
A spinner number 1-10 is spun. Each number is equally likely to be spun.
What is the probability of spinning:
37) an even number OR a power of three? ____________________
38) an odd number OR a power of three? ____________________
39) a number less than 8 OR a factor of 15? ___________________
40) Which of the problems above are about: (write the problem number under its type)
COMPLEMENTARY events? INCLUSIVE events? MUTUALLY-EXCLUSIVE events?
Independent vs. Dependent Events
Independent events
41) Bag A contains 9 red marbles and 3 green marbles. Bag B contains 9 black marbles and 6 orange
marbles. Find the probability of selecting one green marble from bag A and one black marble from bag B.
____________________
42) Two seniors, one from each government class are randomly selected to travel to Washington, D.C.
Wes is in a class of 18 students and Maureen is in a class of 20 students. Find the probability that both
Wes and Maureen will be selected.
____________________
43) If there was only one government class, and Wes and Maureen were in that class of 38 students,
what would be the probability that both Wes and Maureen would be selected as the two students to go
to Washington? Is this still an example of independent events?
____________________
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FAQs of Probability Test Review Worksheet for Grade 2 Math

What types of probability exercises are included in this worksheet?
The worksheet includes exercises that require students to calculate the probability of drawing names from a hat, selecting cards from a deck, and spinning a numbered spinner. Specific tasks involve determining the likelihood of events such as drawing a 4-letter name or spinning an even number. These exercises help students understand the foundational concepts of probability in a practical context.
How does the worksheet explain independent and dependent events?
Independent events are illustrated through examples involving two separate bags of marbles, where the outcome of one event does not affect the other. In contrast, dependent events are demonstrated through scenarios where the outcome of the first draw influences the second, such as drawing marbles without replacement. This distinction is crucial for students to grasp the different types of probability calculations.
What is the significance of inclusive vs. mutually exclusive events in probability?
Inclusive events allow for the possibility of overlapping outcomes, while mutually exclusive events cannot occur simultaneously. The worksheet provides examples that clarify these concepts, such as calculating the probability of drawing a king or queen from a deck of cards. Understanding these principles is essential for students as they learn to analyze complex probability scenarios.
What basic counting principles are taught in this worksheet?
The worksheet teaches basic counting principles through real-life scenarios, such as ordering ice cream and selecting car options. Students learn to calculate the total number of combinations based on different choices, which reinforces their understanding of how to approach probability problems. This foundational knowledge is vital for more advanced probability studies.
How does the worksheet prepare students for assessments in probability?
By providing a variety of exercises on single event probability, basic counting principles, and event classifications, the worksheet equips students with the skills needed for assessments. It encourages critical thinking and problem-solving in probability, ensuring that students can apply their knowledge effectively in tests and real-world situations.

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