___________
Maths
Expressions and formulae
Starter quiz
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Give to class
63 + 37 = 100 being rearranged to 37 + 63 = 100 is an example of __________.
categorisation
commutativity ✓
congruency
coordination
cumulation
When rearranging equations, you must perform the same operation to both sides in order to maintain __________.
equation
equality ✓
equalness
equilateral
In the equation 172 + 398 = 570, the term 570 can be described as the __________ of 172 and 398.
factor
multiple
product
sum ✓
Given that 1734 + 2117 = 3851, which of these calculations are correct?
2117 + 1734 = 3851 ✓
1734 + 3851 = 2117
3851 + 2117 = 1734
3851 − 2117 = 1734 ✓
2117 = 1734 − 3851
Match each operation to its inverse operation.
Addition
⇔
Subtraction ✓
Subtraction
⇔
Addition ✓
Multiplication
⇔
Division ✓
Squaring
⇔
Square rooting ✓
Which of these equations can be represented by this bar model?
x+3=15
✓
x=3+15
15-x=3
✓
3x=15
x-15=3
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