Addition of decimals - k-12math.info

Addition of Decimals - ADICION (NUMEROS DECIMAL) - ADDITION (DECIMALE)
Content Distribution w/OER | Previous | Information
( K-12math.info )

Select and click on one of the following to obtain additional information about the term:
None of the wiki's have an intuitive way to develop the concept of addition of decimals. The simplest and most natural approach would be in buying things. Buy 2 items and add up their total cost.

Wikibook - reference 1

Wikibook - reference 2

Links checked 9/19/2011

Addition of Decimals
Series | Code | Information

Textbook Series:
Grades: K-11 (ages: 5-16)
1. Harcourt Brace Jovanovich(1972)
2. D.C. Heath (1972)
3. Laidlaw (1978)
4. Houghton Mifflin(1981)
5. Addison-Wesley(1985)
6. Harper and Row(1985)
7. Holt, Rinehart and Winston(1985)
8. Harcourt Brace Jovanovich(1985)
9. Houghton Mifflin(1985)
10. Scott, Foresman(1986)
11. Houghton Mifflin(2002)
12. McGraw-Hill/Glencoe K-8 (2002)

CNX Connexions OER Mathematics Grade 1-9 (2009)

CK-12 OER Mathematics Series (2010)

Code:
USAGE CODE:
4 Definition or formal development
3 Term present
2 Synonym used
1 Enrichment
- Term not present
*- Material unavailable

Grade:	_K___	_1___	_2___	_3___	_4___	_5___	_6___	_7___	_8___	_9___	_10__	_11__
Age:	5	6	7	8	9	10	11	12	13	14	15	16
1-1972	-	-	-	-	4-358	4-258	4-236	4-202	4-075	-	-	-
2-1972	-	-	-	-	-	4-272	4-048	4-232	4-249	-	-	-
3-1978	-	-	-	-	4-282	3-216	3-134	3-130	4-088	-	-	-
4-1981	-	-	-	-	3-300	4-178	3-082	3-080	4-052	-	-	-
5-1985	-	-	-	4-332	4-350	4-088	4-064	4-040	4-038	-	-	-
6-1985	-	-	-	-	3-322	4-260	4-164	4-092	4-028	-	-	-
7-1985	-	-	-	-	4-294	4-304	4-140	4-098	4-102	-	-	-
8-1985	-	-	-	4-308	4-344	4-294	4-218	4-094	4-040	-	-	-
9-1985	-	-	-	3-334	3-330	3-278	4-128	4-046	4-044	-	-	-
10-1986	-	-	-	-	4-288	4-134	4-110	4-104	4-074	-	-	-
11-2002	-	-	-	4-520	4-388	4-058	4-031	-	-	-	-	-
12-2002	-	-	-	3-600	4-598	4-018	3-010	-	-	*-	*-	*-
CNX 2009	*-	-	-	-	-	4	3	4	-	-	*-	*-
CK-12 2010	*-	*-	*-	* -	*-	*-	4	4	*-	*-	*-	*-

usage code - page number
(for OER materials, click on the usage code under the desired grade level.)

Note: All spreadsheets in K-12math.info are of student's textbook editions not the teacher's edition.