Math Mastery for my Grade 6 students at BISPP

Danika has a collection of 4,782 marbles. What is the place value of 7 in the total number of marbles?

• 700

• 17

• 70

• 7

Answer explanation

In the number 4,782, the digit 7 is in the tens place. Therefore, its place value is 7 multiplied by 10, which equals 70. Thus, the correct answer is 70.

Arrange the following numbers in ascending order: 56, 23, 89, 12.

• 12, 56, 23, 89

• 12, 23, 56, 89

• 23, 12, 89, 56

• 89, 56, 23, 12

Answer explanation

To arrange the numbers 56, 23, 89, and 12 in ascending order, we start with the smallest number, which is 12, followed by 23, then 56, and finally 89. Thus, the correct order is 12, 23, 56, 89.

Meiling and Danika are comparing two numbers: 3,456 and 3,465. Which number is greater?

• 3,500

• 3,400

• 3,456

• 3,465

Answer explanation

To determine which number is greater, compare the two: 3,456 and 3,465. Since 3,465 is larger than 3,456, the correct answer is 3,465.

Meiling is organizing a charity event and needs to round the total donations of $4,678 to the nearest hundred for the report.

• $4,700

• $4,500

• $4,800

• $4,600

Answer explanation

To round 4,678 to the nearest hundred, look at the tens digit (7). Since it is 5 or greater, round up. Thus, 4,600 becomes 4,700.

Nawadh is trying to help his friends Meiling and Nara by listing the first five multiples of 6 for their math project.

• 6, 12, 18, 24, 36

• [6, 12, 18, 24, 30]

• 1, 2, 3, 4, 5

• 5, 10, 15, 20, 25

Answer explanation

The first five multiples of 6 are obtained by multiplying 6 by the integers 1 through 5. This results in 6, 12, 18, 24, and 30, making the correct answer [6, 12, 18, 24, 30].

Danisa is trying to find out what the factors of 24 are for her math project. Can you help her?

• 15

• 5

• 10

• [1, 2, 3, 4, 6, 8, 12, 24]

Answer explanation

The factors of 24 are the numbers that divide 24 without leaving a remainder. These include 1, 2, 3, 4, 6, 8, 12, and 24, making the correct choice [1, 2, 3, 4, 6, 8, 12, 24].

Nara is thinking about the number 37. He wonders whether it is odd or even. Can you help him?

• prime

• even

• odd

• composite

Answer explanation

The number 37 is odd because it cannot be divided evenly by 2. An odd number has a remainder of 1 when divided by 2, which is the case for 37.

Nawadh, Danisa, Danika, and Nara are discussing numbers during their math class. They need to identify the prime number from the following: 15, 17, 21, 25.

• 17

• 25

• 21

• 15

Answer explanation

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. Among the options, 17 is the only prime number, as 15, 21, and 25 can be divided by numbers other than 1 and themselves.

What is 8 x 7 using a mental strategy?

• 48

• 56

• 64

• 72

Answer explanation

To find 8 x 7, you can break it down: 8 x 7 is the same as (8 x 5) + (8 x 2). So, 40 + 16 = 56. Thus, the correct answer is 56.

Nawadh and Danika are at a café. They decide to order some pastries. Nawadh orders a pastry that costs 5.6 dollars, and Danika orders one that costs 3.4 dollars. How much do they spend in total?

• 9.0

• 10.2

• 8.0

• 7.5

Answer explanation

To calculate 5.6 + 3.4, align the decimal points and add: 5.6 + 3.4 = 9.0. Therefore, the correct answer is 9.0.