Basic Arithmetic and Fractions

The video tutorial covers adding fractions with the same denominator, exploring different methods to sum fractions, and applying fractions to color grids according to specific rules. It includes a lesson check on prime numbers and exercises on dividing unit cubes and sorting coins.

What is the sum of 1/8 + 1/8 + 1/8?

• 1/4

• 3/8

• 1/2

• 3/4

If you add 1/12 six times, what is the result?

• 6/12

• 1/2

• 1/6

• 1

Which of the following is a way to sum fractions to 7/10?

• 3/10 + 3/10

• 2/10 + 4/10

• 5/10 + 1/10

• 1/10 + 6/10

How can you express 7/10 using only 1/10 fractions?

• Seven times 1/10

• Five times 1/10

• Three times 1/10

• Ten times 1/10

Miguel needs to color 4/8 of a grid with more green sections than red. Which is a valid option?

• 2 green, 1 red, 1 blue

• 1 green, 2 red, 1 blue

• 1 green, 1 red, 2 blue

• 2 green, 2 red

Petra needs to color 6/6 of a grid with more blue sections than red or pink. Which is a valid option?

• 3 blue, 2 red, 1 pink

• 2 blue, 2 red, 2 pink

• 1 blue, 3 red, 2 pink

• 4 blue, 1 red, 1 pink

What fraction of an apple is left if Nancy eats 2 out of 6 slices?

• 1/3

• 2/3

• 1/2

• 1/6

Which of these numbers is a prime number?

• 1

• 13

• 21

• 51

How many unit cubes are left over when 100 cubes are divided equally among 7 groups?

• 1

• 2

• 3

• 0

If a teacher divides 100 unit cubes among 7 groups, how many cubes does each group get?

• 15

• 12

• 14

• 13