Represent a change story using addition and subtraction symbols

Maths

In this unit pupils will  interpret numbers greater than and less than zero. They will read and write negative numbers explain, how the value of a number relates to its position from zero positioning on a number line. In the future unit pupils will estimate the value and position of numbers including negative numbers on unmarked or partially marked number lines and calculate intervals across zero.

In the prior unit pupils compared and ordered 4-digit numbers They learned to round and rounded 4-digit numbers to the nearest 1000, 100 and 10, counted backwards through 0. In this unit pupils will interpret numbers greater than and less than zero. They will read and write negative numbers, explain how the value of a number relates to its position from zero, positioning on a number line.

Negative numbers

Which of the these would result in a negative change to the number of marbles in the bag?

Jun is adding in and taking out one pound coins from his piggy bank. Which of these would result in a negative difference to the amount of money in the piggy bank?

People are getting on and off a bus at different stops. The bus already has a number of passengers. Which of these would result in a negative change?

the number of marbles taken out of the bag

Jun and Sofia are playing the marbles game. They have used the equation 5 − 7 = −2. What does each of the numbers represent? 

Jun adds £4 to his piggy bank and takes £6 out. Which of the following equations describes this?

Which of the following words is the same as add? Select all that apply.

The temperature is 32℃. It decreases by 9℃. Tick the symbols that would be needed to write this as an equation.

The temperature is 12℃. It drops by 11℃. Which of the following unsolved equations matches the problem?

one number, calculation or expression is equal to another

the result of subtracting one number from another

finding the total, or sum, by combining two or more numbers

Match the word with its correct definition. 

This lesson will soon be taken down.

Represent a change story using addition and subtraction symbols

Lesson outcome