Length, mass and capacity – Year 1 maths worksheet answers to download as PDF

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1. Answer to Question 1

   1. Count the cubes in each bar: A has 5, B has 9 and C has 3. The biggest number is 9, so bar B is the longest.
   2. The smallest number of cubes is 3, so bar C is the shortest.
   3. Order the numbers from smallest to biggest: 3, 5, 9. So the order is C, A, B.
   4. Bar B has 9 cubes and bar A has 5. Count on from 5 to 9: 6, 7, 8, 9. That is 4 steps, so B is 4 cubes longer.

2. Answer to Question 2

   1. The bar starts at 0 on the ruler and its end lines up with the 4 mark. So the bar is 4 cm long.
   2. The bar starts at 0 and ends exactly at the 9 mark, so it is 9 cm long.
   3. The bar starts at 0 and ends at the 6 mark, so it is 6 cm long. Always check that the bar starts at 0 before you read the end.

3. Answer to Question 3

   1. The bag side is down. The bag is heavier.
   2. The cat side is down. The cat is heavier.
   3. The book side is down. The book is heavier. The cube is lighter.

4. Answer to Question 4

   1. Both pans are at the same height and the beam is flat, so the scales are level.
   2. Level scales mean both sides push down the same amount. So the ball and the block have the same mass.
   3. One more cube makes the ball side heavier than the block side. The heavier side goes down, so the ball side goes down.

5. Answer to Question 5

   1. Look for the container with water right up to the top: the first one is full.
   2. The water in the second container comes up to the middle, so the second one is half full.
   3. The third container has no water in it at all, so the third one is empty.
   4. The full container has more water than the half-full one, and the empty one has none. So the first one holds the most water now.

6. Answer to Question 6

   1. An elephant is much harder to lift than a mouse, so an elephant is heavier than a mouse.
   2. A pencil fits in your hand but a bus is as long as many cars, so a pencil is shorter than a bus.
   3. A feather floats in the air and a brick is hard to carry, so a feather is lighter than a brick.
   4. A giraffe can reach the leaves at the top of a tree, so a giraffe has a longer neck than a rabbit.

7. Answer to Question 7

   1. 14 is more than 9. The rope is longer. 14 − 9 = 5 cm.
   2. 12 is less than 17. The box is lighter. 17 − 12 = 5 cubes.
   3. 6 is less than 10. The cup holds less than the mug.
   4. 10 − 6 = 4 spoons more.

8. Answer to Question 8

   1. Compare the heights 12 cm, 18 cm and 9 cm. 18 is the biggest number, so sunflower B is the tallest.
   2. 9 is the smallest number, so sunflower C is the shortest.
   3. Find the difference between 18 and 12. Count on from 12: 13, 14, 15, 16, 17, 18. B is 6 cm taller than A.
   4. Find the difference between 12 and 9. Count on from 9: 10, 11, 12. C is 3 cm shorter than A.

9. Answer to Question 9

   1. 9 cm (read from the ruler).
   2. 9 + 7 = 16 cm.
   3. 16 is less than 20. No, it is too short.
   4. 20 − 16 = 4 cm more.

10. Answer to Question 10

    1. 20 is more than 15, so the flour.
    2. 20 − 15 = 5 cubes heavier.
    3. 20 + 15 = 35 cubes.
    4. 10 is less than 15. Yes, the butter is lighter than the sugar.

11. Answer to Question 11

    1. 8 buckets.
    2. 12 − 8 = 4 buckets.
    3. Half of 12 is 6. He has put in 8, which is more than 6. Yes, it is more than half full.
    4. Half of 12 is 6 big buckets.

12. Answer to Question 12

    1. 9 is biggest, so the oranges.
    2. 5 is smallest, so the pears.
    3. 7 + 9 + 5 = 21 cubes.
    4. 9 + 7 = 16, and 16 is more than 15. Yes, it is true.

13. Answer to Question 13

    1. Each small cup holds 2 spoons. Count in 2s for 3 cups: 2, 4, 6. That makes 6 spoons.
    2. Each big cup holds 5 spoons. Two big cups hold 5 + 5 = 10 spoons.
    3. Compare 10 and 6. 10 is bigger, so 2 big cups hold more juice than 3 small cups.
    4. Count on from 6 to 10: 7, 8, 9, 10. That is 4 spoons more.

14. Answer to Question 14

    1. Rope A is 10 cm longer than rope B, so add: 20 + 10 = 30 cm.
    2. Rope C is 5 cm shorter than rope B, so subtract: 20 − 5 = 15 cm.
    3. Compare 30 cm, 20 cm and 15 cm. The biggest length is 30 cm, so rope A is the longest.
    4. Put the lengths from smallest to biggest: 15 cm, 20 cm, 30 cm. The order is C, B, A.

15. Answer to Question 15

    1. 12 is the biggest. Bea.
    2. 6 is the smallest. Cara.
    3. Bea (12), Dev (10), Ali (8), Cara (6).
    4. 6 + 5 = 11. 11 is less than 12, so no. It is the second tallest.
    5. 8 + 12 + 6 + 10 = 36 cubes.

16. Answer to Question 16

    1. The pencils must start at the same line. If not, it is not a fair test.
    2. Put both pencils with the ends at the same line, or measure each with a ruler from 0.
    3. 13 is more than 12, so Mia's pencil is longer.
    4. 13 − 12 = 1 cm longer.

17. Answer to Question 17

    1. Ball (4), toy car (6), shoe (9), book (15).
    2. 6 + 9 = 15. The toy car and the shoe.
    3. 15 − 9 = 6 cubes heavier.
    4. 6 + 4 = 10. 10 is more than 9, so yes.

18. Answer to Question 18

    1. 15 is more than 8. The big tank.
    2. 15 − 8 = 7 jugs more.
    3. Double 8 is 16, and 15 is just 1 less than 16. Yes, it is nearly double.
    4. Half of 8 is 4 jugs.

19. Answer to Question 19

    1. 10 and 10 are the same length, so no.
    2. 12 − 8 = 4, and 8 + 12 = 20. Yes.
    3. The pieces are 8 cm and 12 cm.
    4. 8 + 12 = 20 cm. Correct.

20. Answer to Question 20

    1. 2 apples are left on the left side.
    2. 1 apple and 5 cubes (8 − 3 = 5) are left on the right side.
    3. 1 apple is left on the left. 5 cubes are left on the right.
    4. 1 apple weighs the same as 5 cubes.