Explain & discuss (teacher-marked)

Write your OWN word problem, about taxi fare with a flat fee, that the equation $3x+20=29$ describes. Then solve your problem.

Daily maximum temperature (°C) — Mon: 28; Tue: 29; Wed: 30; Thu: 20; Fri: 23. Describe the trend in this data, and suggest ONE possible reason for it.

Write your OWN word problem, about airtime and data bundles, that the equation $2x+6=16$ describes. Then solve your problem.

A spinner has 4 equal sectors numbered 1 to 4. Ayanda spun it 8 times and never got a 4. She says the spinner is broken. Give a reason why she could be wrong.

Zinhle says 0,562 is bigger than 0,6 because 562 is bigger than 6. Explain why she is wrong.

Calculate $15\times29$ using the shortcut $15\times(30-1)$, AND with any other method of your choice. Say which method you found quicker and why.

Write your OWN word problem, about sweets shared among friends, that the equation $3x+30=60$ describes. Then solve your problem.

Calculate $25\times21$ using the shortcut $25\times(30-9)$, AND with any other method of your choice. Say which method you found quicker and why.

Explain, in your own words, why $9\times(40+7)$ gives the same answer as $9\times40+9\times7$.

Explain, in your own words, why $6\times(36+5)$ gives the same answer as $6\times36+6\times5$.

Explain why $31\div0$ has no answer, but $0\div31=0$.

Learners using the library per week — Week 1: 25; Week 2: 34; Week 3: 41; Week 4: 50; Week 5: 54. Describe the trend in this data, and suggest ONE possible reason for it.