Year 5

# Calculating across zero

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## Lesson details

### Key learning points

- In this lesson, we will be adding and taking away consecutive numbers and spotting patterns in answers.

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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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### 5 Questions

Q1.

2 consecutive numbers have a sum of 31. What are the 2 numbers?

13 and 18

14 and 15

17 and 18

Q2.

Which of the below is correct?

The sum of 2 consecutive numbers is equal to the smaller number multiplied by 3.

The sum of 3 consecutive numbers is equal to the larger number multiplied by 3.

The sum of 3 consecutive numbers is equal to the middle number multiplied by 2.

Q3.

3 consecutive numbers have a product of 6. What are the 3 numbers?

0, 2 and 3

1, 3 and 4

2 and 3

Q4.

The sum of 4 consecutive numbers is equal to 26. What are they?

3, 4, 5, 6

4, 5, 6, 7

7, 8, 9,10

Q5.

Which consecutive numbers below do not have the same sum as the others?

1, 2, 3, 4, 5

4, 5 and 6

7 and 8

### 5 Questions

Q1.

What is the answer to -1 + 2 + 3?

-3

-4

3

Q2.

What is the answer to 11 + 12 - 13?

11

12

13

Q3.

What is the answer to the calculation 96 + 97 - 98?

94

98

99

Q4.

What is the answer to 87 - 88 + 89

86

89

90

Q5.

Which of the calculations below have a sum of 61?

-60 + 61 + 62

60 - 61 - 62

60 + 61 - 62