Dividing by 2: half of 52 to 100.
Division to 100
Division to 100 practice, from 60 ÷ 6 to 84 ÷ 6 = 14 and 7500 ÷ 5: halving 52 to 100, dividing by partitioning, and a round with all four operations.
Your child can start here once they can divide up to 50 and multiply up to 100; the later exercises also need subtraction within 100 and multiplication up to 20. A sum like 84 ÷ 6 is split into 60 ÷ 6 and 24 ÷ 6: subtracting finds what is left after the first chunk, and multiplying finds how many sixes fit into each part.
Usually taught in Year 3–4 in England and Wales, around ages 7 to 9. Every child goes at their own pace; this is a guide, not a requirement.
The first of 13 exercises in this topic. See them all
What it looks like for your child
With one exercise from this topic as the example: Work it out.
1
2
3
4
How it fits together
The arrows point to what can be done next. Whatever sits inside a box belongs to it.
Needed first
Division
Can come next
first this, then that belongs to
Dividing is the table backwards: 72 ÷ 8 — what times 8 makes 72?
The same sums, but a different number missing each time: the answer, the divisor, or the number being divided.
A race against time, for children who can already do it and want to be faster.
Dividing is the table backwards: 72 ÷ 8 — what times 8 makes 72?
The same sums to 100, with zeros on the end: if you know 8 ÷ 2 = 4, you also know 80 ÷ 20 = 4, 8000 ÷ 2000 = 4 and 8000 ÷ 2 = 4000.
Which two numbers give this result? Tap them in the right order.
Everything in this topic in one round of 30 sums.
Against the clock: how many can your child do in sixty seconds?
A long round of 40 mixed sums to finish.
Look carefully at the sign first.
30 sums in a row, everything mixed: the real test.
A race against time, for children who can already do it and want to be faster.
Why it matters
Up to 100, your child also divides numbers that are not in the ordinary times tables, such as 96 ÷ 4 or 78 ÷ 3. These only become solvable by partitioning: 78 is 60 + 18, and those are two division sums your child already knows.
The round with addition, subtraction, multiplication and division rounds off this series. A child who gets through it quickly and without a mistake really has a grip on the four operations up to 100.
How to approach it
Teach your child to take a big, easy chunk off a tricky division sum first. For 91 ÷ 7 that is 70 ÷ 7 = 10, and the 21 left over is 3 sevens. Together that makes 13. This is also how written division works later on, only then on paper.
Halving up to 100 works the same way, with one trap: an odd number of tens. Half of 76 is half of 70 plus half of 6, so 35 + 3 = 38. That 70 split in two gives 35 and not a round number takes some getting used to.
When is it secure?
All 10 right in one round, and no more than 35 seconds altogether. Around 3.5 seconds a sum shows your child is no longer counting.