2. Today we will be learning: to count on in ones or tens to count back in ones or tens to split two-digit numbers into tens and units to make them easier to add.

3. Mental Activity Look at this hundred square.

4. 12345678910 111213141516171819 212223 252627282930 3132343537383940 41424344454647484950 515253545556575860 61626364656667686970 71727375 77787980 81828384858687888990 919293949596979899100 Add 1 to the green numbers. 59 20 74 3336

5. Subtract 1 from the green numbers. 35 62 91100

6. 12345678910 111213141516171920 212223 252627282930 31323334353637383940 414243444647484950 515253545556585960 61626364656667686970 7172737475 77787980 818284858687888990 919293949596979899100 Add 10 to the green numbers. 45 57 83 18

7. 12345678910 11121314151617181920 212223 252627282930 31323334353637383940 414243454647484950 525354555657585960 61626364656667686970 7172737475 77787980 81828384858687888990 9192939495969899100 Subtract 10 from the green numbers. 97 51 44

8. 12345678910 11121314151617181920 212223 252627282930 3132333435363733940 41424344454647484950 51525354555657585960 61626364656667686970 717273 74 75 77787980 81828384858687888990 919293949596979899100 What is 10 more than the green number? What do you notice about the position of the two numbers?

9. 32 + 10 =42 91 – 10 =81 76 + 10 =86 23 – 10 =13 Use a hundred square to help you add or subtract 10 from these numbers.

10. Main Activity Today we are going to split numbers into: hundreds tens and units.

11. Can you read this number? 921 What is this digit worth? U

12. 921 UT

13. 921 UTH

14. Look at this number 5 units =53 tens = 304 hundreds = 400 435

15. 435 = 400 + 30 + 5

16. Now split these numbers into hundreds, tens and units in the same way. 231 627 109 540

17. Group Work Read two-digit numbers and split them into tens and units. Split three-digit numbers into hundreds, tens and units. Make up examples of three-digit numbers and split them into hundreds, tens and units.