2-45 Assessment

33 can be written as:

3 TENS and 3 ONES or 2 TENS and 13 ONES.

Regroup the following numbers.

21 can be written as:

2 TENS and 1 ONE or 1 TEN and ONES.

44 can be written as:

4 TENS and 4 ONES or 3 TENS and ONES.

55 can be written as:

TENS and 5 ONES or 4 TENS and ONES.

79 can be written as:

7 TENS and ONES or TENS and 19 ONES.

37 can be written as:

3 TENS and ONES or TENS and 17 ONES.

68 can be written as:

6 TENS and 8 ONES or TENS and 18 ONES.

83 can be written as:

TENS and 3 ONES or 7 TENS and ONES.

72 can be written as:

TENS and 2 ONES or TENS and 12 ONES.

91 can be written as:

9 TENS and 1 ONE or 8 TENS and ONES.

64 can be written as:

6 TENS and ONES or 5 TENS and ONES.

Find the difference.   Tens Ones 8 4 3 7

Regroup!     Tens Ones 7 14 3 7

Subtract the ones!   Tens Ones 7 14 3 7   7

Subtract the tens!   Tens Ones 7 14 3 7   4 7

Find the difference.

41		62		37		51		33		62		72
- 22		- 34		- 19		- 42		- 19		- 23		- 34
62		81		78		92		52		78		91
- 43		- 23		- 49		- 76		- 33		- 59		- 42

Complete the problems below.

33			44			63			91
- 24	+ 24		- 27	+ 27		- 47	+ 47		- 37	+ 37
9	33		17	44		26	63		54	91
67			63			82			45
- 38	+ 38		- 47	+ 47		- 69	+ 69		- 15	+ 15