Year 4 negative numbers worksheet answers to download as PDF

These Year 4 negative numbers worksheet answers give a full worked solution to all 21 questions of the negative numbers worksheet. Try each question yourself first, then check your method step by step.

← Back to the worksheet

Answer to Question 1
1. The liquid is at 7 °C, which is above freezing.
2. The liquid is at −6 °C, which is below freezing.
3. The liquid is just below the zero mark at −1 °C, which is below freezing.
4. The liquid is at 0 °C, which is exactly at freezing point.
Answer to Question 2
1. The negatives are −7 and −2, then 0, then 4 and 5: −7, −2, 0, 4, 5.
2. The negatives are −12, −3 and −1, then 3 and 10: −12, −3, −1, 3, 10.
3. All are negative, so the one with the biggest digit part is the smallest: −200, −22, −20, −2.
Answer to Question 3
1. The boxes are at −4, −1, 2 and 4: −4, −1, 2, 4.
2. The red dot is −3.
3. Start at −3 and count up 4: −2, −1, 0, 1. So the number is 1.
Answer to Question 4
1. The numbers go down by 2: −1 − 2 = −3, −3 − 2 = −5, −5 − 2 = −7. The next three are −3, −5, −7.
2. The numbers go up by 3: −1 + 3 = 2, 2 + 3 = 5, 5 + 3 = 8. The next three are 2, 5, 8.
3. The numbers go down by 2: −2, −4, −6.
4. The numbers go up by 1: −1, 0, 1.
Answer to Question 5
1. −3 is negative and 2 is positive, so −3 < 2.
2. −8 is further left than −5, so −8 < −5.
3. 0 is to the right of −1, so 0 > −1.
4. −51 is further left than −15, so −15 > −51.
5. Every positive number is bigger than a negative one, so 4 > −40.
Answer to Question 6
1. From −4 to 3 is 7 degrees. The difference is 7 degrees.
2. From −2 to 5 is 7 degrees. The difference is 7 degrees.
3. From −6 to −1 is 5 degrees. The difference is 5 degrees.
4. From −7 to 0 is 7 degrees. The difference is 7 degrees.
Answer to Question 7
1. The smallest temperature is −6 °C, so Aberdeen was the coldest.
2. Aberdeen (−6), Leeds (−4), Belfast (−2), Cardiff (1), Plymouth (3).
3. From −6 to 3: 6 steps to zero, then 3 more, so 6 + 3 = 9 degrees.
4. Below freezing means below 0 °C: Aberdeen, Leeds and Belfast.
Answer to Question 8
1. From −2 to 3: 2 floors to reach 0, then 3 more, so 2 + 3 = 5 floors.
2. From −1 to 2: 1 floor to 0, then 2 more, so 1 + 2 = 3 floors.
3. Count down 6 from 4: 3, 2, 1, 0, −1, −2. It stops at floor −2.
4. −1 is higher, because it is nearer to zero and to the right on the number line: −1 > −2.
Answer to Question 9
1. The smallest number is −24, so freezer B is the coldest.
2. −16 or colder means −16 or less: −18 and −24 qualify. Freezers A and B are cold enough. (−15 is warmer than −16.)
3. −18 + 6 = −12 °C. This is warmer than −16 °C, so it is not cold enough.
4. From −24 up to −15 is 9 steps, so 9 degrees colder.
Answer to Question 10
1. The diver is −12 m.
2. From −12 to 0 is 12 and from 0 to 8 is 8, so 12 + 8 = 20 m.
3. −12 + 5 = −7 m.
4. From −35 up to −12 is 23 steps, so 23 m below.
Answer to Question 11
1. Reds 5 − 2 = 3; Blues 2 − 5 = −3; Greens 3 − 3 = 0; Yellows 1 − 4 = −3.
2. Reds (3), Greens (0), Blues (−3), Yellows (−3). The Blues and Yellows are equal.
3. Greens score 5 and let in 3: 5 − 3 = 2.
4. From −3 up to 3 is 6 steps, so 6 goals.
Answer to Question 12
1. 0 − 4 = −4 and −4 − 3 = −7.
2. −7 + 9 = 2 (count 7 to reach 0 and then 2 more).
3. From −5 to 2 is 5 + 2 = 7 squares apart.
4. 10 − 2 = 8 squares.
Answer to Question 13
1. The temperature falls 2 each hour: 5, 3, 1, −1, −3. Table: 3, 1, −1, −3.
2. The temperature reaches 0 °C between 2 pm (1 °C) and 3 pm (−1 °C), so the water starts to freeze at about 2:30 pm, and it is frozen by 3 pm.
3. −3 − 2 = −5 °C.
4. From 5 down to −5 is 10 degrees, so 10 degrees.
Answer to Question 14
1. −3 + 4 = 1 °C.
2. 1 + 2 = 3 °C.
3. 3 − 5 = −2 °C.
4. The temperatures are −3, 1, 3 and −2. It was warmest at lunch time (3 °C) and coldest at 8 am (−3 °C).
Answer to Question 15
1. The lowest of all is −9 °C on Thursday; the highest of all is 5 °C on Wednesday.
2. Monday: from −5 to 2 is 5 + 2 = 7. Tuesday: from −7 to 0 is 7. Wednesday: from −1 to 5 is 1 + 5 = 6. Thursday: from −9 to −2 is 7. So the differences are 7, 7, 6 and 7 degrees.
3. The differences of Monday, Tuesday and Thursday are all 7 degrees; Wednesday has the smallest, 6.
4. On Thursday the highest temperature was −2 °C, which is below freezing. On Tuesday the highest was exactly 0 °C, which is not below freezing. So Thursday is the only day that was always below freezing. The forecaster is correct.
5. −9, −7, −5, −1 (Thursday, Tuesday, Monday, Wednesday).
Answer to Question 16
1. −28, −22, −19, −15.
2. From −22 up to −15 is 7 degrees.
3. From −28 up to −15 is 13 degrees fall.
4. Warmest −15, coldest −28: difference 13 degrees.
5. −28 + 8 = −20 °C.
Answer to Question 17
1. 100 m.
2. From −100 up to −50 is 50 m.
3. From −50 down to −150 is 100 m.
4. Surface to −100: 100 m. Up to −50: 50 m. Down to −150: 100 m. Up to the surface: 150 m. Total: 100 + 50 + 100 + 150 = 400 m.
5. 100 ÷ 5 = 20 seconds.
Answer to Question 18
1. The temperature falls 6 each time: 6, 0, −6, −12, −18. Table: 0, −6, −12, −18.
2. At 1 000 m it is exactly 0 °C. At 2 000 m it is below freezing (−6 °C), so 2 000 m is the first height that is below freezing.
3. −18 °C, which is 18 degrees below zero.
4. At 2 000 m it is −6 °C. Is −6 below −3? Yes, −6 is less than −3. So yes, she needs her coat.
5. 5 × 6 = 30, so it is 30 degrees colder: 6 − 30 = −24 °C.
Answer to Question 19
1. The most west is the smallest number: the stone bridge (−8). The most east is the windmill (9).
2. From −8 to 9: 8 + 9 = 17 paces.
3. −3 + 6 = 3. He stops at 3 paces east of the oak tree. The nearest landmark is the red barn (5), which is 2 paces away.
4. From −8 to 5 is 13 paces. Half of 13 is 6.5. So the treasure is at −8 + 6.5 = −1.5, which is between the duck pond (−3) and the old oak tree (0).
Answer to Question 20
1. Tuesday: 5 − 8 = −3. Wednesday: −3 + 6 = 3. Thursday: 3 − 4 = −1.
2. He owes money when the number is negative: on Tuesday (−3) and Thursday (−1).
3. On Tuesday he owes £3.
4. −1 + 10 = 9, so he has £9 and is no longer owing money.
Answer to Question 21
1. Clue 1 says that A is the coldest, so A = −6 °C. Clue 2: B is 3 degrees warmer than D. The remaining temperatures are −2, 1 and 4. Two of these are 3 apart in two ways: −2 and 1, or 1 and 4. So (D, B) is (−2, 1) or (1, 4). Clue 3 says C is warmer than B. If B = 4 then nothing is warmer, so B = 1 and D = −2. The only temperature left is 4, so C = 4 °C. The answers are A = −6, B = 1, C = 4, D = −2.
2. C = 4 and 4 − 7 = −3 °C. Town D is at −2 °C. −3 is less than −2, so C is now colder than D, not warmer.
3. From −6 to 4 is 6 + 4 = 10 degrees.

How to use these Year 4 negative numbers worksheet answers

First, try every question on the worksheet without looking. Then compare your working with the solution line by line, not only the final answer. When your answer is different, find the first step that changes, because that is where the mistake is. After that, read the matching part of the negative numbers lesson again. Finally, check that the method is secure with the quiz or the test.

Also, the Year 4 negative numbers worksheet answers are available as a PDF, so you can mark printed work quickly. Moreover, all the pages of this chapter work together, so you can move between them at any time. For example, many pupils read the lesson on Monday, practise on Wednesday and test themselves on Friday. In short, these Year 4 negative numbers worksheet answers show every step, so nothing is left unexplained.