Revision 3

The top 3 will receive present from Ms.Choding. Let's review chapter 3. Are you ready?

• Yes!

• Of course, yes!

Which one is an expression?

Find the 8^th triangle number.

• 16

• 28

• 36

• 38

Which number is NOT a multiple of 6?

• 18

• 14

• 36

• 24

The position-to-term rule of this sequence is "multiply by 6 then subtract 1". Find the 4^th term.

• 23

• 24

• 20

• 21

What does the word "position" mean?

• dãy số

• số hạng

• vị trí

• quy luật

Write down this function machine as an equation:

Write down this function machine as a mapping:

Write this statement as an expression: "The mystery number add two then multiplied by four"