2.18 To use a range of techniques to perform calculations

Mathematics

Division

Educator section

Memorandum

Leaner section

Content

Activity: to use a range of techniques to perform calculations [lo 1.10.2]

Divide the class into groups of three. Ask the educator for the paper that you will need and answer the following questions as accurately and neatly as you can:

1. The product of two numbers is 20 856. If one of the numbers is 79, what is the other number?

2. Mr Dlamini's heart beats at a rate of 4 500 beats in one hour. How many times will it beat in a minute?

3. At a particular prize draw the announcer says that the winning number is exactly divisible by 26. The number on Zwandor's ticket is 15 249. Does he have the winning ticket?

4. If 293 identical elephant tusks weigh 21 975 kg in total, how much will one of them weigh?

5. Buses are hired to transport 48 675 spectators to a soccer match. How many buses will be needed to get everyone to the soccer match if each bus can take 113 spectators?

6. Check your answers with the help of a pocket calculator.

7. Explain how your group calculated the answers to the rest of the class.

8. Compare your methods. How do they differ?

Group assessment

Evaluate yourselves on a scale of 1– 4.

Did you know?

Dinosaurs had up to 2 400 teeth in their mouths, while we

only have 28!

Assessment

Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.

Assessment Standard 1.10: We know this when the learner uses a range of techniques to perform written and mental calculations with whole numbers including:

1.10.2: long division.