Test 1. Multiplication table

Before proceeding to the solution of examples and problems be sure to read the theoretical part of the lesson 

Multiplication table

 1. The set products when 7 is a factor has some interesting patterns. Can you find the rest of the products without thinking about multiplying?

2. The set products when 4 is a factor has some interesting patterns. Can you find the rest of the products without thinking about multiplying?

3. The set products when 6 is a factor has some interesting patterns. Can you find the rest of the products without thinking about multiplying?

4. The set products when 5 is a factor has some interesting patterns. Can you find the rest of the products without thinking about multiplying?

5. The set products when 8 is a factor has some interesting patterns. Can you find the rest of the products without thinking about multiplying?

6. The set products when 2 is a factor has some interesting patterns. Can you find the rest of the products without thinking about multiplying?

7. The set products when 9 is a factor has some interesting patterns. Can you find the rest of the products without thinking about multiplying?

8. The set products when 3 is a factor has some interesting patterns. Can you find the rest of the products without thinking about multiplying?

9. Without using a calculator, evaluate the expression:

{[2(4 + 5) – 2] – 9} + 8.

 а)  18;      b)  13;      
 c)  14;      d)  15.

10. Without using a calculator, evaluate the expression:

4{[2(2 + 5) + 2] – 9}.

 а)  31;      b)  28;      
 c)  22;      d)  25.

11. Without using a calculator, evaluate the expression:

6{[4+ 2(5 + 3)] – 11}.

 а)  54;      b)  61;     
 c)  51;      d)  58.

12. Without using a calculator, evaluate the expression:

8{29 – [2(3 + 7) + 2]}.

 а)  62;      b)  51;      
 c)  56;      d)  54.