Operations and Expressions with Numbers

The video tutorial explains how to make equations true using parentheses and basic arithmetic operations. It demonstrates forming the number three by dividing 21 by 7, where 21 is obtained by adding three sevens. The next example shows forming the number eight by dividing 56 by 7, where 56 is achieved by adding 49 and 7, with 49 being the product of 7 times 7. The tutorial encourages viewers to apply these methods to solve additional equations.

How can you make the equation 21 divided by 7 equal 3 using parentheses?

• (7 + 7) + 7 / 7 = 3

• 7 + 7 + (7 / 7) = 3

• 7 + (7 + 7) / 7 = 3

• (7 + 7 + 7) / 7 = 3

What is the correct way to form 56 using 49 and 7?

• 49 + 7

• 49 / 7

• 49 - 7

• 49 * 7

Which of the following operations will result in 8 when using 56 and 7?

• 56 / 7

• 56 * 7

• 56 - 7

• 56 + 7

How can you express 49 using multiplication?

• 7 / 7

• 7 - 7

• 7 * 7

• 7 + 7

What is the next step after forming 49 to make 56?

• Divide by 7

• Add 7

• Multiply by 7

• Subtract 7