Let’s go through each item one by one and decide whether it uses
mains electricity (plugged into a wall socket) or
batteries (portable power).
1.
Wall clock – Most wall clocks run on batteries so they can be hung anywhere without needing a plug.
→
batteries
2.
Desktop computer – This needs to be plugged into the wall to work. It doesn’t run on batteries.
→
mains
3.
Stand mixer – Kitchen appliances like this are usually plugged in because they need lots of power.
→
mains
4.
Calculator – Small calculators often use tiny batteries (or solar, but we’re only choosing between mains and batteries).
→
batteries
5.
Toaster – You plug this into the wall to toast bread. No battery version for regular home use.
→
mains
6.
Iron – Needs to get very hot — that takes a lot of power from the wall socket.
→
mains
7.
Flashlight – Designed to be portable, so it runs on batteries.
→
batteries
8.
Smartphone – Has a rechargeable battery inside. Even though you charge it with a cable, it runs on battery power when not plugged in.
→
batteries
9.
TV – Plugged into the wall. Too big to run on batteries normally.
→
mains
10.
Hair dryer – Needs strong heat and airflow — powered by mains electricity.
→
mains
Now let’s list them in order as they appear in the worksheet:
Left column (top to bottom):
- Wall clock → batteries
- Stand mixer → mains
- Toaster → mains
- Flashlight → batteries
- TV → mains
Right column (top to bottom):
- Desktop computer → mains
- Calculator → batteries
- Iron → mains
- Smartphone → batteries
- Hair dryer → mains
Final Answer:
batteries
mains
mains
batteries
mains
mains
batteries
mains
batteries
mains
Parent Tip: Review the logic above to help your child master the concept of battery worksheet.