Algebra Answers

Jabu had a few marbles. Today he played and double his number of marbles. Then Thabo gave him three marbles for free. Jabu has 21 marbles now. How many did he have before he started playing?

The photo is 120 mm ×90 mm. It is enlarged to 360 mm × 270 mm. The elephant's tail in the smaller photo is 15 mm long. How long is its tail in the larger photo? Show your calculations.

simply 12/25 of (1.1/4)^2

Give the learner's about 3 problems to solve using a table. Instead of x and y, we have " headings". Example :
- farmer Joe packs a dozen eggs into a box in a minute. Fill in the ff table:
Minutes/3/5/10/15/20
Eggs packed into boxes/ / / / / /

-Mr brick the builder pays his laboures R105 a day. Use a table to work out how much he will have to pay : 2 labourers, 5 labourers 10 labourers 15 labourer's 17 labourer's for a day.

Give learners practice in today's work. Give them examples to do individuallly in their workbooks of filling in a table where the first 3 to 4×-values are completed ;using a rule to complete a table for different values of ×. Give them about 3 of each.

Evaluate the use of matches to build patterns, keeping in mind the cognitive stage that grade 6 learners have reasonably reached and the progression from teaching concepts in concrete, semi - concrete and semi - abstract ways. Write down your thoughts on this.

Rule:×4+2
Jacob is making patterns using marbles such as the one below. Show by means of a flow chart and a table, how many marbles he will use for the 6th pattern, the 11th pattern, the 41st pattern and the 100th pattern. Write down the rule for this pattern.

The municipality wants to lay hexagonal paving stones around each flower bed. Using a flow chart and table, work out how many paving stones the municipality will need to pave around:2 flower beds, 16 flower beds and 32 flower beds. Write down the rule(also called a formula). Rule: ×4+2

How to calculate the standard algorithm of 5_2/3_3/5

Give the learner's written work to do. Give them about 20 exercises ith the operation sign missing. They must fill in the correct operation sign. Examples: - 480 16=(answer÷)
- 540 9=4 5
- 60 12=72
Concept development (25 minutes)
. Give each group of learners some match sticks. Ask them to build a row of three triangles such as this:(draw this on the board.)


- ask the learners if we can conclude that we need 2 matches to build every triangle. We can, but to close the last ( of first) triangle, we need an extra match:


- if we need to make a pattern of 100 triangles, it is not practical to sit and make all those triangles, so we need to establish a rule.ask the learner's if they can think of a rule. It is (number of triangles ×2)+1.so to make a pattern of 100 triangles, we work out how many matches we need like this:(100×2)+1=201.