Exploring Multiplication in 7th Grade Mathematics

The video tutorial covers various mathematical problems for 7th-grade students, focusing on multiplication, ordering numbers, creating sums that equal zero, calculating height differences, and determining cycling distances. It also includes finding missing numbers in equations. The tutorial emphasizes understanding negative numbers, absolute values, and basic arithmetic operations.

What is the value of the expression -12 times 1/3?

• 4

• -4

• 3

• -3

What is the result of multiplying -12 by -1/3?

• -3

• 4

• -4

• 3

What is the value of -1 times 2 times 3?

• -6

• 5

• 6

• -5

What is the result of -1 times -2 times 3?

• 5

• -5

• 6

• -6

Order the following set of numbers from least to greatest: -6, -2, 0, 4, 8.

• 0, -6, -2, 4, 8

• -2, -6, 0, 4, 8

• 4, -6, -2, 0, 8

• -6, -2, 0, 4, 8

Order the following set of numbers from least to greatest: -5.5, -5.2, -5, -2.5, 5.5.

• -5.5, -5.2, -5, -2.5, 5.5

• 5.5, -5.5, -5.2, -5, -2.5

• -2.5, -5, -5.2, -5.5, 5.5

• -5, -5.2, -5.5, -2.5, 5.5

Which of the following sums equals zero: -2 + 2?

• 2 + 3

• -2 + 2

• 2 + 2

• -2 + -2

Which of the following sums of three numbers equals zero: 5 + -2 + -3?

• 5 + 2 + 3

• 5 + -2 + -3

• 5 + 2 + -3

• -5 + 2 + 3

What is the difference in height between a submarine 55 meters below the surface and an aircraft 200 meters above the surface?

• 55 meters

• 255 meters

• 145 meters

• 200 meters

What number times 3 equals -15?

• -5

• 5

• 3

• -3