
Exploring Perfect Squares and Roots
Authored by Sydney Faour
Mathematics
7th Grade
ONTARIO covered
Used 3+ times

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16 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does 12 x 12 = 144 tell you about the square root?
16
Answer explanation
The equation 12 x 12 = 144 shows that 144 is a perfect square. Therefore, the square root of 144 is 12, which is represented as \(\sqrt{144} = 12\). This confirms the correct answer.
Tags
ONTARIO.MATH.7.B1.2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following numbers is a perfect square?
50
64
75
90
Answer explanation
A perfect square is an integer that is the square of another integer. Among the choices, 64 is 8 squared (8 x 8), while 50, 75, and 90 are not perfect squares.
Tags
ONTARIO.MATH.7.B1.2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Express 5,000,000 in expanded form using powers of ten.
Answer explanation
5,000,000 can be expressed as 5 multiplied by 1,000,000. Since 1,000,000 is 10 raised to the power of 6, the expanded form is 5 × 10^6, making this the correct choice.
Tags
ONTARIO.MATH.7.B1.1
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following represents the number 1,234,567 in expanded form (using powers of 10)?
Answer explanation
The correct expanded form for 1,234,567 is 1 × 10^6 + 2 × 10^5 + 3 × 10^4 + 4 × 10^3 + 5 × 10^2 + 6 × 10^1 + 7 × 10^0, which represents each digit's value based on its position.
Tags
ONTARIO.MATH.7.B1.1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the square root of 225?
13
14
15
16
Answer explanation
The square root of 225 is the number that, when multiplied by itself, equals 225. Since 15 x 15 = 225, the correct answer is 15.
Tags
ONTARIO.MATH.7.B1.2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following numbers is not a perfect square?
81
100
121
130
Answer explanation
A perfect square is an integer that is the square of another integer. 81 (9x9), 100 (10x10), and 121 (11x11) are perfect squares, while 130 cannot be expressed as the square of an integer, making it the correct answer.
Tags
ONTARIO.MATH.7.B1.2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is the expanded form of 700,000,000?
Answer explanation
The number 700,000,000 can be expressed in scientific notation as 7 times 10 raised to the power of 8, which is written as 7 \times 10^8. Therefore, the correct choice is 7 \times 10^8.
Tags
ONTARIO.MATH.7.B1.1
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