Show model answer and explanation
39
Multiply the bags by their contents, then subtract nine.
Class 4 · Bangla Version · Mathematics
Multi-step problems and checking
Explore multi-step problems and checking with an example and your own answers.
About this lesson and its coverage
Original Kidemy foundation practice · Read the example, write your answers, then check. This starter is shared across class versions; it is not a complete board-specific lesson or course.
Open this topic in Skills Lab →
Learn the idea
Plan the order of operations from the story. Use an inverse calculation or an estimate to check the result.
Worked example
Five boxes hold 12 pencils each. After 8 pencils are used, 5 × 12 − 8 = 52 remain.
- Read the example and explain which rule or evidence it uses.
- Try each task yourself, then compare the answer and its reason.
Your written practice
Show your working on paper. Check your answer, then choose Next.
Show model answer and explanation
89
Multiply for three equal days, then add seventeen.
Show model answer and explanation
41
Subtract those leaving and add those entering.
Take it further
Apply the idea in a new situation and explain your method. Open writing needs a guardian or teacher to review it.
Show model answer and explanation
59
8×12−37=96−37=59.
Show model answer and explanation
17
3×48−127=144−127=17.
Write in your own words. A guardian or teacher should review this response.
Show model answer and explanation
Only the blue beads are in packs: 12+(8×5)=52 beads.
Match each operation to the quantities in the story.
Progress and browser storage
Notebook challenge, sources and further study
Teacher-led lessons, schedules and prices for this outline are upcoming. You can use any starter practice above now without booking.
Your next step
Solo practice works without an account. Sign in to save a practice record to your learner profile.
Keep practising
Exact lesson links and related activities are labelled separately. Return-to-course links retain your selected learning path.
Play this exact lesson in Skills Lab →