Currently viewing the tag: "Inverse operations"
LESSON RESOURCE FOR GLOBAL MATHS AND SCIENCE LESSON 2026
Join the thousands of classes around the world in the Global Maths & Science Lesson in the week 10 – 18 October 2026. To receive a certificate of participation register at https://gtenmaths.org/gmsl and post a photo of your class taken during the lesson with hashtag […]
What do you notice about the numbers in this square?
Write numbers in the blank boxes in squares B, C. and D that make the same patterns as in square A.
Cards 1 to 16 all use multiplication or division and give clues about the numbers in squares A, B, C […]
The formulas below have been rearranged, some are correct and others are wrong. Decide which are right and which are wrong and be prepared to explain why. The first one has been done for you. 1. Distance time formula: $s = ut + \frac{1}{2}at^2$ (s = distance, u = initial velocity, a = acceleration, t […]
You are a detective and you have to discover what digits the question marks stand for. They can be any digit from 0 to 9 and they can be the same digit or different digits.
How will you find the missing digits?
What do you notice?
How many solutions are there to the calculations?
What clues […]
Complete the calculations in the first list. Then use your answers to find the numbers to fill the boxes in the second list.
What do you notice about the connections between the equations: ☐ × 8 + 1 = 9 etc. and the calculations: (9 – 1) ÷ 8 […]
The input to Function Machine 1 is x. Write down an expression for the output.
If the output is 7 what was the input?
In Function 2, a is constant. If the input is 4 what is the output?
The functions from Function Machines 1 & 2 are combined to give Function […]
(1) You are blindfolded. The audience tells you the number in Box B and you can immediately say the numbers in box C and box A.
How is this trick done?
Can you make the trick more impressive?
You can change the x 6 and + 5 to other operations and numbers […]
Number games that develop recognition and understanding of functions and inverse functions and the ability to create formulas.
Click here to download a pdf with all you need to run your own professional development workshop.
Work out the different numbers to replace the question marks.
What do you notice about the patterns in these calculations?
Can you explain why this pattern occurs?
Put the missing symbol into the box to make these number sentences correct.
Use the symbols +, −, ×, ÷ and =.
17 ☐ 21 = 38
17 ☐ 3 = 51
57 ☐ 29 = 28
9 ☐ 63 ÷ 7
You can make most of the number sentences below correct by putting in […]
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