## Calculations Crossing Zero (C) worksheet

Suitable for Year groups: 7, 8
GCSE Tier:
Foundation
Targeting grades: 1-3
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Prerequisite knowledge: Compare and order positive and negative integers
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## Calculations Crossing Zero (C) worksheet description

This worksheet links the conceptions covered in Calculations Crossing Zero (A) and (B) and further helps to prepare learners for addition and subtraction of directed numbers.

In section A, students are provided with an example showing how a number line is used to answer a subtraction question that crosses zero and then 7 number lines that have been used for either addition or subtraction and are asked to write the number sentence that the number line represents.

Section B consists of 6 number sentences to complete with a mixture of positive and negative answers.
Then in section C, students consider what makes an answer to different calculations positive, negative or zero as they suggest numbers to fit different conditions such as A - B is positive.

Finally in section D, there are addition and subtractions to answer that involve three terms and two operations.

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