Adding 5

key notes :

Concept of Addition:

  • Explain that addition is putting things together to find out how many there are in total. For example, if you have 3 apples and you get 5 more, you count all the apples to find out the total.

Adding 5 to a Number:

  • To add 5 to a number, start from that number and count forward by 5.
  • For example, to find 7 + 5, start at 7 and count up 5 steps: 8, 9, 10, 11, 12. So, 7 + 5 = 12.

Number Line:

  • Use a number line to visually represent the addition of 5.
  • Show how moving 5 steps to the right from a given number helps to find the sum.

Using Objects:

  • Use physical objects like blocks or counters to demonstrate adding 5.
  • Start with a certain number of objects, add 5 more, and count the total.

Patterns:

  • Help students recognize patterns when adding 5. For example, the units digit of the sum will always be 5 or 0.

Learn with an example

🔷Add. 0 + 5 =

When you add 0 to a number, the number stays the same.

0 + 5 = 5

🔷Add. 10 + 5 =

  • You can count on to find 10+5.
  • Start at 10 and count on 5 times.
  • You end at 15.
  • 10 + 5 = 15

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  • You can also think about place value to add.
  • 10 + 5 is 1 ten and 5 ones.
tensones
15
  • That makes 15.
  • 10 + 5 = 15

🔷Add. 4 + 5 =

  • You can count on to find 4 + 5.
  • It is easier to start with the larger number. So, start at 5. Count on 4 times.
  • You end at 9.
  • 4+5=9

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  • You can also add using doubles plus one.
  • Remember the doubles fact 4 + 4 = 8.
  • Notice that 4 + 5 is 1 more. That makes 9.
  • 4 + 5 = 9

Let’s practice!