Little Learners · Ages 5 to 7
Is This Sum Correct? True/False
Decide whether each addition or subtraction sum is correct. A Grade 1 reasoning worksheet with true/false answers and answer keys.
The learning journey
Every activity is one step. Here is where this one fits.
- PlayLearn the idea in a game
- Practise(you are here)Lock it in on paper
- ReviewCome back and keep it sharp
- MasterTake on a harder challenge
- AchieveEarn a certificate
About Is This Sum Correct? True/False
Is This Sum Correct? True/False asks Grade 1 learners to do something more demanding than simply working out an answer: to judge whether a completed sum is right. Each question shows an addition or subtraction statement, and the child decides true or false by ticking a box. Checking someone else's working is a powerful reasoning skill — it pushes children to calculate carefully, look for mistakes, and build a sense of what a sensible answer looks like, which is exactly the kind of mathematical thinking the UK KS1 and Australian Year 1 curricula want to develop. Mixing correct and incorrect sums means children cannot guess the same answer each time; they have to check every one. The five levels grow the number range as confidence builds. Each page prints cleanly on a standard A4 sheet, and every level downloads with its own answer key marking each statement true or false. There is no advertising, no sign-up and no data leaves the device. Use it to build checking habits or alongside our addition and subtraction games.
Common questions
- What does this build?
- Reasoning and checking — judging whether a completed sum is correct.
- What operations are covered?
- Both addition and subtraction statements.
- Is an answer key included?
- Yes, every level marks each statement true or false.
A hand for grown-ups
- Before you start
- Have something countable nearby. Being able to check "3 and 2 really is 5" by counting builds trust in the maths.
- While they work
- If a sum is hard, suggest counting on from the bigger number rather than counting both from one. It is a real strategy, not a crutch.
- Afterwards
- Try one together out loud, talking through how you worked it out. Hearing an adult think aloud is genuinely useful.
- Watch out for
- Counting both numbers from one every time. Nudge gently towards "start at the bigger one and count on".
- Away from the screen
- Add up small shopping items, or dots on two dice. Board games with dice are addition practice in disguise.
Where to go next
Chosen by the skills this activity practises.