Huh Lab Maths

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Cambridge Primary Maths: Stage 1

Stage 1 of the Cambridge Primary Mathematics (0096) curriculum framework, usually Year 1 (ages 5 to 6). Here is what each part asks, a practice question for each, and the mistakes that cost the most marks.

Practise Stage 1 as a game

The 33 parts of Stage 1

Each part with one practice question, made by the same engine your child plays.

Counting and sequences

Count up to 20 objects

The questions for this part come with a picture or are played as a game, so they are best tried in Huh Lab.

See how many there are in a familiar pattern (up to 10) without counting

The questions for this part come with a picture or are played as a game, so they are best tried in Huh Lab.

Estimate up to 20 objects, then check by counting

The questions for this part come with a picture or are played as a game, so they are best tried in Huh Lab.

Count on in ones, twos or tens and back in ones and tens, from any number to 20

Count on in twos: 10, 12, 14, ...
What comes next?

  1. 18
  2. 15
  3. 14
  4. 16
Show the answer

16. Counting on in twos means adding 2 each time: 14 + 2 = 16.

Odd and even as every other number, to 20

Which number is even?

  1. 1
  2. 2
  3. 17
  4. 5
Show the answer

2. Count in twos from 2: 2, 4, 6, 8… Every other number is even, and 2 is one of them.

Describe a repeating sequence of objects

The pattern repeats.
green, yellow, green, yellow, green, yellow, ?
What comes next?

  1. red
  2. green
  3. yellow
  4. blue
Show the answer

green. The part that repeats is "green, yellow". Carry it on and the next is green.

Integers and powers

Say, read and write numbers and number names to 20

Which number is "eighteen"?

  1. 81
  2. 28
  3. 80
  4. 18
Show the answer

18. eighteen is written 18.

Addition as counting on and as combining two sets

6 + 1 = ?

  1. 9
  2. 5
  3. 7
  4. 6
Show the answer

7. 6 + 1 = 7.

Subtraction as counting back, take away and difference

What is the difference between 20 and 1?

  1. 19
  2. 18
  3. 20
  4. 21
Show the answer

19. The difference is how many more one number is than the other. Count up from 1 to 20: that is 19.

Complements of 10

? + 4 = 10

  1. 11
  2. 6
  3. 4
  4. 14
Show the answer

6. 6 + 4 = 10.

Estimate, add and subtract with answers to 20

8 + 9 = ?

  1. 17
  2. 19
  3. 1
  4. 16
Show the answer

17. 8 + 9 = 17.

Doubles up to double 10

Double 1 is…

  1. 3
  2. 1
  3. 2
  4. 12
Show the answer

2. Double 1 means 1 + 1 = 2.

Place value, ordering and rounding

Zero means none of something

Which number means "none at all"?

  1. 10
  2. 0
  3. 5
  4. 1
Show the answer

0. Zero, 0, means there is nothing to count.

Make, split and regroup the numbers 10 to 20

1 ten and 2 ones make…

  1. 3
  2. 12
  3. 20
  4. 21
Show the answer

12. 1 ten is 10. 10 + 2 = 12.

Compare and order numbers to 20

Which number is the biggest?

  1. 10
  2. 2
  3. 11
  4. 16
Show the answer

16. 16 is the biggest of 2, 10, 16, 11.

Ordinal numbers, 1st to 10th

Children queue in this order:
Mei, Ravi, Kai, Omar, Tom, Zara.
Who is 4th in the queue?

  1. Omar
  2. Mei
  3. Zara
  4. Kai
Show the answer

Omar. Count along the queue: 1st Mei, 2nd Ravi, … 4th is Omar.

Fractions, decimals, percentages, ratio and proportion

A shape split into two equal or two unequal parts

The questions for this part come with a picture or are played as a game, so they are best tried in Huh Lab.

A half as one of two equal parts of a set or quantity

Half of 6 is…

  1. 5
  2. 12
  3. 4
  4. 3
Show the answer

3. 3 + 3 = 6, so half of 6 is 3.

A half as an operator, whole-number answers

Double 4 is…

  1. 6
  2. 4
  3. 13
  4. 8
Show the answer

8. Double 4 means 4 + 4 = 8.

Halves combine to make wholes

2 halves of an apple are put together.
How many whole apples is that?

  1. 2
  2. 4
  3. 0
  4. 1
Show the answer

1. Every two halves make one whole: 2 ÷ 2 = 1 whole apples.

Time

Everyday language for units of time

Which is LONGER: an hour or a month?

  1. a month
  2. an hour
  3. it depends
  4. they are the same
Show the answer

a month. From shortest to longest: second, minute, hour, day, week, month, year. A month is longer than an hour.

Days of the week and months of the year

Which month comes just before January?

  1. May
  2. June
  3. August
  4. December
Show the answer

December. Before January comes December.

Time to the hour and half hour

The questions for this part come with a picture or are played as a game, so they are best tried in Huh Lab.

Geometrical reasoning, shapes and measurements

Identify, describe and sort 2D shapes: number of sides, curved or straight

Which shape has NO straight sides?

  1. pentagon
  2. square
  3. circle
  4. triangle
Show the answer

circle. A circle is one curved line all the way round. Every other shape here is made of straight sides.

Language of length: long, longer, longest and so on

Which of these is the longest?

  1. a pencil
  2. a spoon
  3. a paper clip
  4. a bus
Show the answer

a bus. A bus is much longer than the others.

Identify, describe and sort 3D shapes: faces, edges, flat or curved

Which of these is a 3D (solid) shape?

  1. square
  2. hexagon
  3. triangle
  4. cube
Show the answer

cube. A cube is solid: you could pick it up. A triangle, a square and a hexagon are flat.

Language of mass: heavy, light, more, less

Which of these is the shortest?

  1. a train
  2. a football pitch
  3. a pencil
  4. a bus
Show the answer

a pencil. A pencil is much shorter than the others.

Language of capacity: full, empty, more, less

Two jugs are the same size.
Jug A is empty. Jug B is nearly empty.
Which jug has LESS water in it?

  1. Jug B
  2. You cannot tell
  3. Jug A
  4. They have the same
Show the answer

Jug A. Full is the most a jug can hold and empty is nothing at all. Jug B has more water, so Jug A has less.

Tell 2D shapes from 3D shapes

The questions for this part come with a picture or are played as a game, so they are best tried in Huh Lab.

Notice when a shape looks the same as it turns

The questions for this part come with a picture or are played as a game, so they are best tried in Huh Lab.

Position and transformation

Everyday language of position and direction

🐶 ⚽ 🎈 🐱 🍎

Which comes FIRST, on the far left?

  1. 🎈
  2. 🐶
  3. 🍎
  4. ⚽
Show the answer

🐶. Read the row from left to right: 🐶 ⚽ 🎈 🐱 🍎. Which comes FIRST, on the far left: 🐶.

Statistics

Record and show categorical data: lists, tables, Venn, Carroll, block graphs, pictograms

Children were asked their favourite fruit:
apple, banana, banana, banana, pear, banana
Count them into a table. How many chose apple?

  1. 0
  2. 2
  3. 6
  4. 1
Show the answer

1. Go through the list once, making a mark for each apple: there are 1.

Describe data with more, less, most and least

The questions for this part come with a picture or are played as a game, so they are best tried in Huh Lab.

The mistakes that cost the most marks

Huh Lab checks every wrong answer against known mistakes like these, and goes back to the step behind the one your child keeps making.

Counts all the parts instead of the ones asked for

Three-quarters means three of the four parts: count only the parts named.

Mixes up left and right

Hold up both hands: the left hand makes an L with thumb and first finger.

Thinks the side of a balance that goes UP is heavier

Push down on one hand: the heavier thing sinks, so the heavier side is the LOWER one.

Counts every item instead of one kind

Go through the list and count ONLY the ones asked about, making a mark for each.

Adds when asked for the difference

The difference is how much MORE one number is: count up from the smaller to the bigger.

Mixes up most and least (longest and shortest)

Point to each word: longest and most mean the BIGGEST one.

Mixes up more and less

More water means fuller. Compare the two and point to the fuller one for "more".

Jumps one step too far in a sequence

Point to each number as you say it, then take just ONE more step.

Other Cambridge Primary Maths stages

Stage 2Year 2, ages 6 to 7 Stage 3Year 3, ages 7 to 8 Stage 4Year 4, ages 8 to 9 Stage 5Year 5, ages 9 to 10 Stage 6Year 6, ages 10 to 11

Practise it as a game

Short rounds on any topic, a new question every time, the exact mistake found, and a report to you after every session.

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