Problems with decimal numbers
Audience: Children at the third level (5 th and 6 th grade) Duration: 50 min.
Field: Community / multigrade
Method for exhibition: On
Skills and knowledge: problem solving with decimal numbers.
Scheme: Decimal numbers
Troubleshooting Literacy
Equivalents
Prerequisites: that the child has worked with fractions, know how (representation) of mixed fractions
diagnostic test:
1. Roberto and Javier
up together on a scale and marks but 98.4 kg. If Alice is off the scale, the weight is 40.6 kg.
What is the weight of Roberto?
____________ What is the weight of Javier? __________
2. If the 2
weigh the same, what would be the weight of each? _________
Objectives • Students will achieve
reading and writing decimal numbers. • You will
equivalence between tenths, hundredths and thousandths.
• Solve problems involving addition and subtraction with decimal numbers and decimal division entity numbers.
Type of activity: Individual support resources
•
white sheets for solve problems
•
The board for the reading and writing decimal numbers. Instructions
1.
The instructor will give the explanation of the decimal numbers.
Decimal numbers have positional value is determined by a sign called the decimal point. The numbers to the left of the point are integers and those who are right wing are fractions of an integer. Tenths Decimal point
Hundredths
thousand
10
1 1 1
100 1000
is read according to the place of the last digit after the decimal point: 0.5 (five tenths)
3.1 (a whole and three cents)
2148 (two integers and one hundred forty-eight thousandths)
2. Instructor
write some numbers on the board and ask students to read, or tell a decimal number and the child will write on the blackboard.
3.
shall show the equivalence between tenths, hundredths and thousandths:
1 = 10 = 100 10 100 1000
4. Solve problems using
where addition and subtraction of decimal numbers, eg
• Martha
bought a skirt that cost $ 137.90 and a $ 98.50 blouse
The payment for the 2 ?___________
If you paid with $ 500 how much you money is left? _______
• Leticia
measures 1.9 meters and 1.38 meters measured Erika
Who is highest
?________________ What is the height difference between them?
____________ 5.
For division of a decimal number body a natural number. It raises the point in alignment to the location quotient and division is as if they had 2 natural numbers:
6.
division will solve problems by following the instructions given in the last issue: 1,726
2 3.4 2 May 1 April 05
February 1
0
•
On the feast of Anna, her mother bought 3,500 kg of sweets and want to them in equal parts in 28 bags for the guests How much does it weigh each bag? ________
•
The cake cost 150.40 pesos, and they will pay between 2 aunts Ana, how much it's up to pay each one of them if they want equal pay? __________
Assessment Review
leaves the problems and ensure that all children participate in reading and writing decimal numbers
Performance Objective Category
The student reads the decimal numbers
• Exceeds expectations
• Met
expectations • Below the level required
Student writes decimal numbers
• Exceeds
•
expectations Met expectations
• Below the level required
The student solves problems involving addition and subtraction with decimal numbers
•
• Exceeds expectations Met expectations
•
below the required level
The student solves division of decimal numbers between numbers.
•
• Exceeds expectations Met expectations
•
below the required level
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