Near Integers - Sharp EL-531RH Teachers Manual

Near Integers

• • • • • • • • • • • • • • • • • • • • • Objective • • • • • • • • • • • • • • • • • • • • •
Understand and use the concept of place value in decimals.
Understand and use decimals and fractions while comprehending the interrelationship between
them.
Use some common properties of numbers, including multiples.
Give solutions in the context of the problem, selecting the appropriate degree of accuracy and
interpreting the display on a calculator.
• • • • • • • • • • • • • • • Explanation of the activity • • • • • • • • • • • • • •
Use the calculator to find fractions that are near integers in decimal form.
While working on this activity, students will be developing their understanding of decimals,
particularly their relationship with fractions.
• • • • • • • • • • • • • • • • • Using the calculator • • • • • • • • • • • • • • • • •
Press the following buttons and then start operation.
The 35th multiple of 0.314 is 10.99.
35 x 0.314 = 10.99
35 0.314
10.99 is a 'near integer'; it is nearly 11.
Using fractional calculation, input
11
Convert to decimal notation.
Using division, divide 11 by 35.
The fraction
11
35
Calculator functions used: Multiplication, division
.
35
has a decimal value close to 0.314.
35X0.314=
11 35=
11 35=
11 35=
22
Junior high school
DEG
DEG
DEG
DEG