Smart Starters · Ages 8 to 10
Decimal Operations Fill-in
Add and subtract decimals and write the answer. A Grade 4–5 decimal-operations worksheet with five levels 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 Decimal Operations Fill-in
Decimal Operations Fill-in builds fluency with adding and subtracting decimals — a skill that underpins money, measurement and much of later mathematics. Each question presents a decimal addition or subtraction and asks the child to write the answer, reinforcing the importance of lining up the decimal point and keeping place value accurate. Calculating with decimals to one and two decimal places is a core Grade 4 and 5 expectation across the US, UK, Canada and Australia, and regular practice is what makes it automatic. Because the numbers change every time, the worksheet stays fresh, and the five levels move from one decimal place to two and grow the size of the numbers, so the same child keeps being challenged as their accuracy improves. Each page prints cleanly on a standard A4 sheet in black and white, and every level downloads with its own complete answer key showing the answer for every question, so marking is quick. There is no advertising, no sign-up and no data leaves the device. Use it for decimal fluency or alongside our decimal games for the same age range.
Common questions
- How many decimal places are used?
- One decimal place at first, building to two at higher levels.
- What grade is this for?
- Grade 4 to Grade 5 learners aged 8 to 10.
- Is an answer key included?
- Yes, every level shows the answer for each question.
A hand for grown-ups
- Before you start
- Find a calm few minutes with no rush. Let your child know it is fine to find some of it tricky — that is what practice is for.
- While they work
- Sit nearby but let them lead. If they get stuck, ask "what could you try?" rather than giving the answer — the thinking is the point.
- Afterwards
- Ask them to show you one they found easy and one they found hard. Praise the effort on the hard one, not just the right answers.
- Watch out for
- Rushing. If answers come too fast and wrong, slow the pace down together rather than pushing for more.
- Away from the screen
- Look for the same maths in everyday life — counting stairs, sharing snacks, spotting shapes on a walk.
Where to go next
Chosen by the skills this activity practises.