ProblemSum vs Chapter

ProblemSum — unlimited PSLE problem sums, every one fully worked. PSLE word problems: ratio, fractions, percentage, money, algebra, rate, time, number patterns and more. Not geometry figures, charts or patterns drawn as shapes — those are read off a picture, and this app writes questions. Primary 6 maths practice that never runs out — because there is no question bank to run out of. No account. No subscription. No internet connection. Pay once and it is yours. NOT A QUESTION BANK Most practice apps ship a fixed set of questions. Work through them and you are done; work through them twice and your child is remembering answers instead of solving problems. ProblemSum has no such list. Every question is written when you ask for it, with its own names, numbers and quantities, and the working follows those numbers — so there is no end of the book to reach, and no set of answers to fall back on instead of the method. AND EVERY ONE IS WORKED THROUGH Type your answer, tap Check Answer, and the full solution opens underneath: the bar model drawn out, the units labelled, every line of working, and — on most questions — a check at the end proving the numbers really do add up. Most types also offer a second method, so a child who cannot see the model can follow the working through instead, or the other way round. BAR MODELS, DRAWN PROPERLY The model method is how Singapore classrooms teach these problems, so it is how ProblemSum explains them. Bars are drawn to scale with their units marked, the part that changed hands shaded, and braces showing what is left — drawn for the numbers in front of you. SOLUTIONS SET LIKE A TEXTBOOK Working is laid out the way it would be written on paper: fractions stacked over their denominators, ratios and percentages and money in their proper forms, and units carried through every line. BUILT FOR THE 2026 SYLLABUS Algebra is new to Primary 6, and it is here, with circles, three-term ratio, volume worked backwards, dividing by a fraction and percentage change. So is the earlier content the PSLE still examines: time and the 24-hour clock, factors and multiples, number patterns, area and perimeter, and discount, GST and interest. Rate comes as the charges a paper sets — by the hour, and in bands — and averages change as someone joins or leaves. WHAT IT COVERS, AND WHAT IT DOES NOT Ratio and fractions run deepest, then percentage and money, then volume and capacity, then algebra, average, rate, rate of work and whole numbers, with age, area and perimeter, circles, factors and multiples, mass, measurement, number patterns and time each drilled by their own kind of question. Every one is set at PSLE level. What it does not do: geometry from a figure, charts and graphs, and patterns drawn as shapes. Those are read off a diagram rather than a paragraph, so they sit outside what a word-problem generator can write. The Info tab lists both sides of that line, so you always know what you have. ANSWER IT THE WAY YOU THINK OF IT $4.50 or 4.50. Three-quarters as 3/4 or 0.75. A time as 1.45 p.m. or 1345. A ratio with spaces or without. ProblemSum accepts the formats a Primary 6 child actually writes, so a right answer is never marked wrong for its punctuation. COME BACK TO WHAT YOU HAVE DONE Recent questions stay on the device with their full solutions, ready to open and read through again. ONE APP, EVERY LEARNER Set up a profile for each child. Each one keeps its own score — questions attempted, questions right — so two children can share an iPad without sharing a total. IPHONE, IPAD AND MAC One purchase covers all three. On Mac and iPad with a keyboard, Command-N gives you the next question and Command-Return checks your answer. WORKS ANYWHERE, TELLS NO ONE ProblemSum makes no network connections at all. There is no account to create, no analytics, no advertising and no data collection of any kind — everything is generated on the device and stays there. Built for the Singapore syllabus.

Chapter is the game where you decide your future. School keeps asking what you want to be. Chapter lets you find out properly. Explore a living world, try real careers before you commit, apply to real universities and build skills that count when you log off. Built with schools across the UK. For ages 11+. STEP INTO THE WORLD • Explore Career Town, University Hub, Startup City, the Skills Garden and the Arcade Zone - every district packed with buildings, characters and quests • Get sorted into one of four Chapter Houses - Sapientia, Custodia, Audacia or Concordia - and battle for your house on the leaderboards • Your Dorm is home base. Decorate it, fill your trophy cabinet, pin your plans to the mood board and adopt a pet (yes, there's a baby dragon) CREATE YOUR AVATAR • Decide who you want to be in the Avatar Studio • Hundreds of hairstyles, outfits and accessories to unlock as you play TRY CAREERS FOR REAL • 100+ career profiles with real salaries and what a day in the job actually looks like • Complete Virtual Work Experience with 30+ real UK employers - tech, healthcare, finance, engineering, media and more • Live a week of Medicine, Law, Engineering, Psychology or Computer Science in immersive Course Tasters • Take the Life Design session and get a letter from your future self APPLY TO UNI • Search 30,000+ real courses from UK universities • See how your grades match up - entry requirements, UCAS points, your strongest fits • Compare courses side by side, check league tables and book open days • Build your personal statement in the Studio with examples, guides and a challenge leaderboard • Track all five UCAS choices in Application HQ GET HIRED • Apprenticeships, CVs and work experience - every route, not just the obvious one • Build your CV in the AI-powered CV Workshop • Practise five interview formats and full assessment centre exercises before the real thing • Meet real companies at the Employer Fair START YOUR BUSINESS • Learn the basics in Startup City • Pitch your idea, face investors and test your brand in the Simulator • Build a business from scratch and see if it flies BUILD SKILLS • Grow your Skills Garden, Island or Sanctuary and watch your progress bloom - literally • Level up Leadership, Resilience, Empathy, Communication, Creativity and more • Everything feeds your Career Passport: proof of the skills universities and employers actually ask about HIT THE ARCADE • 14 games that sneak learning in - Higher or Lower, Salary or Bluff, Sixty Second CEO, Survival Simulator, Who Am I and more COMPLETE QUESTS • Daily quests, school quests and challenges across every zone • Earn XP, coins and badges. Keep your streak. Climb school and regional leaderboards • Chat with Chappy, your AI career guide who remembers your goals and what you've tried SAFE BY DESIGN • Safety-first chat moderation, built for students from day one • Optional school accounts so teachers can set quests and see progress Stop guessing what you want to be. Start trying it.