1 Addition Grade 2

2 Welcome  Hello!  How are you today.  Lets start a new Lesson !

3 Recap  In the last chapter, we learned how to Regroup ones as tens to make addition simpler.  Always begin with adding ones.  You can regroup by making tens and ones if there is 10 or more ones.  Then we add tens to get the sum.

4 Try this!!  Julia bought 6 dresses from a shop. Her friend bought 11 dresses from the same shop. How many dresses did they buy all together? Can you tell the correct answer? Well done!!

5 Adding one digit to two digit numbers  Lets add 6 and 17. Write 6 as 6 ones and 17 as 1 tens and 7 ones.  Show 6 and 17 in tens and ones table in step 1. TensOnes TensOnesTensOnes Step 1Step 2Step 3 Add 6 ones and 7 ones.Regroup 10 ones as 1 ten.Add the tens.

6 Adding two digit numbers (cont.)  So, = 23 TensOnes TensOnes TensOnes

7 Adding two digit numbers  Example Add 3 and 19 TensOnes TensOnes TensOnes

8 Something to remember!!  When you add one digit to two digit numbers, always add ones first.  While adding ones if the ones are 10 or more, you can regroup.  Remember when you regroup, record in the tens column.

9 Practice  Add one digit to two digit numbers

10 Practice  Add one digit to two digit numbers

11 Practice  Add one digit to two digit numbers

12 Practice  Add one digit to two digit numbers

13 Practice  Add one digit to two digit numbers

14 Practice  Add one digit to two digit numbers

15 Practice  Regroup. Write how many tens and ones are there in 65? tensOnes

16 Practice  Rachael scored 3 points in a quiz. Her team mate scored 18 points in the same quiz. How many points did they scored in all?

17 Practice  Lisa has 8 roses and 25 lilies for the flower arrangement. How many flowers she had in all?

18 Practice  Find the missing number __ = 21

19 Break!!

20 Assessment  What is the sum of 8 and 25?

21 Assessment  When you regroup 34, how many tens would be in tens column?

22 Assessment  Add the following one digit to two digit numbers. TensOnes

23 Assessment  Add the following one digit to two digit numbers. TensOnes

24 Assessment  Add the following one digit to two digit numbers. TensOnes

25 Assessment  Add the following one digit to two digit numbers. TensOnes

26 Assessment  Add the following one digit to two digit numbers. TensOnes

27 Assessment  Sheena bought 6 bananas from a corner shop. Lucy bought a dozen bananas from the same shop. How many bananas do they have in all?

28 Assessment  Michael has 22 marbles and Peter has 9 marbles. How many marbles do they have in all?

29 Assessment  Add the following

30 Assessment  Do you need regrouping in the following:

31 Recap  When you add one digit to two digit numbers, always add ones first.  While adding ones if the ones are 10 or more, you can regroup.  Remember when you regroup, record in the tens column.  Then add to find the sum.

32 Excellent work!!  Now practice your worksheet to get better understanding of adding one digit to two digit numbers.  All the best.