1.NBT.2
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
1. | How many buses? Choose correct numeral | |
2. | Numbers Break-Up: 25=20+? | |
3. | Numbers Break-Up: 27 = 20 and ? | |
4. | Numbers Break-Up: 24 = 20 and ? | |
5. | Numbers Break-Up! 29 = 20 + ? | |
6. | Numbers Break-Up! 26 = 20 + ? | |
7. | Numbers Break-Up! 38 = ? + 8 | |
8. | Numbers Break-Up! 44 = ? + 4 | |
9. | Numbers Break-Up! 51 = 50 + ? | |
10. | Numbers Break-Up! 37 = ? + 7 | |
11. | Bring More Blocks: 2 tens, 6 ones | |
12. | Bring More Blocks: 2 tens, 5 ones | |
13. | Bring More Blocks: 1 ten, 7 ones | |
14. | Bring More Blocks: 1 ten, 8 ones | |
15. | Bring More Blocks: 2 tens, 9 ones | |
16. | Make a Number! 9 ones, 5 tens | |
17. | Make a Number! 1 ten, 4 ones | |
18. | Make a Number! 0 ones, 2 tens | |
19. | Make a Number! 6 ones, 3 tens | |
20. | Make a Number! 4 tenths and 9 ones | |
21. | Show and Tell - Click the number of ten groups and ones: 31 | |
22. | Show and Tell - Click the number of ten groups and ones: 56 | |
23. | Show and Tell - Click the number of ten groups and ones: 17 | |
24. | Show and Tell - Click the number of ten groups and ones: 99 | |
25. | Show and Tell - Click the number of ten groups and ones: 26 | |
26. | Show and Tell - Click the number of ten groups and ones: 80 | |
27. | Tell That Number: Recognise a number from ten and one groupings | |
28. | Tell That Number: Recognise a number from ten and one groupings | |
29. | Tell That Number: Recognise a number from ten and one groupings | |
30. | Tell That Number: Recognise a number from ten and one groupings | |
31. | Tell That Number: Recognise a number from ten and one groupings | |
32. | Tell That Number: Recognise a number from ten and one groupings | |
33. | Tell That Number: Recognise a number from ten and one groupings | |
34. | Tell That Number: Recognise a number from ten and one groupings | |
35. | Tell That Number: Recognise a number from ten and one groupings | |
36. | Tell That Number: Recognise a number from ten and one groupings | |
37. | Tell That Number: Recognise a number from ten and one groupings (1) | |
38. | Tell That Number: Recognise a number from ten and one groupings (1) | |
39. | How many ladybugs? |