App Dev Worksheet: Part 1 Test

App development lesson 8: What apps are: Part 1 test · Set 151 · 40 questions

Developer's tip (Name the topic): First decide which topic the question is about. Use that lesson’s rule: count, order, match or work it out. Read every line of a screen or a code snippet before you answer.

1. 1.🗒️ Version 1 of a pocket-money tracker must be ready in 13 days. How many days are left for extras after the must-haves?
   add money received: 4 days
   add money spent: 3 days
   show the balance: 4 days
2. 2.🗒️ Version 1 of a bus tracker must be ready in 7 days. How many days are left for extras after the must-haves?
   see where the bus is: 2 days
   show arrival time: 2 days
   pick your bus stop: 3 days
3. 3.⚙️ What number does this app show?
   let price = 100; // typed by the user
   let qty = 4; // typed by the user
   let total = price * qty;
   show(total);
4. 4.🗒️ What is a must-have feature? (a) a nice extra (b) a colour theme (c) one the app cannot skip (d) a sound effect
5. 5.Which of these is an input? (a) taking a photo (b) a beep sound (c) working out a tip (d) a result on screen
6. 6.👥 A school app has 35 students, 280 teachers and 190 parents as users. How many more teachers than students are there?
7. 7.🗒️ You are planning version 1 of a pocket-money tracker. Which feature is a MUST-HAVE? (a) export to a file (b) pie-chart colours (c) show the balance (d) savings stickers
8. 8.True or false: tap to Save is data. (a) False (b) True
9. 9.💡 Does an app idea like an app that just says hi solve a real problem? (a) No (b) Yes
10. 10.🔍 Which is the odd one out? (a) write down the bugs (b) try every button (c) list what users need (d) let friends try it
11. 11.👥 A school app has 75 students, 235 teachers and 145 parents as users. How many users does it have in all?
12. 12.🗒️ You are planning version 1 of a pocket-money tracker. Which feature can WAIT for a later version? (a) add money received (b) add money spent (c) pie-chart colours (d) show the balance
13. 13.🧩 How many inputs (text boxes, switches and sliders) does this screen have?
    [title] Order Snacks
    [button] Cancel
    [text box] Email
    [button] Next
    [button] Done
    [slider] Text size
14. 14.⚙️ Which line does the processing (works out the answer)?
    line 1: let price = 60; // typed by the user
    line 2: let qty = 3; // typed by the user
    line 3: let total = price * qty;
    line 4: show(total); (a) line 2 (b) line 1 (c) line 4 (d) line 3
15. 15.Which of these happens at the build stage? (a) share the download link (b) try every button (c) write the code (d) pick the features
16. 16.🗒️ You are planning version 1 of a pocket-money tracker. Which feature can WAIT for a later version? (a) show the balance (b) add money received (c) export to a file (d) add money spent
17. 17.🧩 In an app, what is the home page of an app? (a) data (b) a screen (c) an input (d) a button
18. 18.⚙️ Which line does the processing (works out the answer)?
    line 1: let price = 280; // typed by the user
    line 2: let off = 40; // typed by the user
    line 3: let pay = price - off;
    line 4: show(pay); (a) line 2 (b) line 1 (c) line 3 (d) line 4
19. 19.True or false: the log-in page is a button. (a) True (b) False
20. 20.📱 The word “app” is short for ___. (a) application (b) apparatus (c) appointment (d) appetite
21. 21.🔢 When you make an app, which comes LAST? (a) plan the screens (b) release it (c) build the app (d) get an idea
22. 22.💡 Which app idea solves this problem: Grandpa forgets his tablets? (a) a homework planner (b) a lost-and-found board (c) a medicine reminder (d) a study-room finder
23. 23.👥 A cricket club app has 105 players, 95 coaches and 70 fans as users. How many more coaches than fans are there?
24. 24.🔍 Which is the odd one out? (a) a flashcard trainer (b) a unit converter (c) a calculator (d) an alarm clock
25. 25.True or false: a bill splitter solves no real problem. (a) False (b) True
26. 26.🧩 What does a button do when you tap it? (a) starts an action (b) saves the battery (c) changes the phone (d) shows the time
27. 27.True or false: a switch for dark mode is an input. (a) False (b) True
28. 28.💡 Which app idea solves this problem: a patient misses doses? (a) a medicine reminder (b) a homework planner (c) a study-room finder (d) a bill splitter
29. 29.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    wasting pocket money: 17 votes
    no quiet study place: 23 votes
    missing the bus: 25 votes (a) missing the bus (b) no quiet study place (c) wasting pocket money
30. 30.🧩 How many buttons does this app screen have?
    [title] Edit Profile
    [button] Save
    [button] Done
    [switch] Remind me
    [button] Next
    [text box] Phone
    [text box] Email
31. 31.🛠️ At which stage do you connect the data? (a) the release stage (b) the build stage (c) the plan stage (d) the test stage
32. 32.🔢 When you make an app, which comes first: “get an idea” or “plan the screens”? (a) plan the screens (b) get an idea
33. 33.💡 After a survey, which need should version 1 solve? (a) the rarest need (b) a random need (c) the newest trend (d) the most common need
34. 34.Which of these is an input? (a) your saved notes (b) a switch for dark mode (c) your friends list (d) the settings page
35. 35.🎯 Why learn about users before you build? (a) to slow it down (b) to make it longer (c) to pick a logo (d) to build what they need
36. 36.🗒️ You are planning version 1 of a quiz app. Which feature is a MUST-HAVE? (a) background music (b) confetti effects (c) check the answer (d) an avatar shop
37. 37.Which of these is an output? (a) adding up a bill (b) typing your age (c) a buzz (vibration) (d) taking a photo
38. 38.🧩 Which input is best for turning something ON or OFF? (a) a title (b) a text box (c) a slider (d) a switch
39. 39.👥 A library app has 270 readers, 250 librarians and 60 volunteers as users. How many users does it have in all?
40. 40.True or false: an app updates from the store. (a) True (b) False

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