Sequences and Algorithms
8 free practice questions with explanations
PassNova has 8 free Kids Coding & Logic practice questions on Sequences and Algorithms, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
Sequences and Algorithms: example questions & answers
8 worked examples with answers and explanations below. Practise them in the browser with instant feedback on every answer.
An algorithm is a list of steps in the right order. To make a jam sandwich, which step comes FIRST?
- AEat the sandwich
- BSpread the jam on the bread
- CGet two slices of bread✓
- DPut the two slices together
Answer: You need the bread out before you can do anything else, so getting the bread is the first step.
Here is a morning algorithm: 1) Wake up, 2) Get dressed, 3) Eat breakfast, 4) Go to school. What is step 3?
- AGo to school
- BEat breakfast✓
- CGet dressed
- DWake up
Answer: Counting along the list, the third step is eating breakfast.
To plant a seed you: dig a hole, put the seed in, cover it with soil, then water it. What do you do just AFTER putting the seed in?
- ADig a hole
- BEat the seed
- CWater it
- DCover it with soil✓
Answer: After the seed is in the hole, the next step is covering it with soil before watering.
Why does the ORDER of steps in an algorithm matter?
- ADoing steps in the wrong order can give the wrong result✓
- BThe steps can all happen at the same time
- CIt only matters for cooking
- DOrder never matters at all
Answer: If you pour the milk before the bowl, it spills. Order matters so the steps work.
A robot's steps to leave a room are: 1) Stand up, 2) Walk to door, 3) Open door, 4) Walk through. Which step is missing if the robot cannot get out?
- ASit back down
- BWalk to door
- COpen door✓
- DStand up
Answer: If the robot forgets to open the door, it will bump into it, so opening the door is the needed step.
Which of these is the BEST description of an algorithm?
- AA set of steps to follow to do a task✓
- BA type of computer screen
- CA funny picture
- DA single button
Answer: An algorithm is just a clear list of steps you follow to finish a task.
To brush your teeth: 1) Put toothpaste on brush, 2) Brush teeth, 3) Rinse mouth. What comes LAST?
- AOpen the toothpaste
- BPut toothpaste on brush
- CBrush teeth
- DRinse mouth✓
Answer: The last step in the list is rinsing your mouth after brushing.
Tom wrote steps to make tea but mixed them up: A) Pour hot water, B) Get a cup, C) Add a teabag. What is the correct order?
- AC, A, B
- BB, C, A✓
- CA, B, C
- DA, C, B
Answer: You get the cup first, add the teabag, then pour the water, so the order is B, C, A.