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Number prompts

Click on im for notes, resources and reports on inquiries.
Calculations: multiplication
im 24 x 21 = 42 x 12
  
im 21 x 534 > 21 x 53 x 4 > 2 x 1534
Calculations: addition
im Pyramid addition inquiry
Calculations: division
im Division inquiry
Calculations with decimals
im 60 x 1.2 = 60 + 12
  
im Multiplication and division inquiry
Negative numbers
im Negative numbers inquiry
Place value and decimals
im Place value inquiry
Prime numbers
im Prime factors inquiry
Factors and multiples
im Product of factors inquiry
The product of the factors of 24 equals 244
 
im HCF and LCM inquiry 1
The product of two numbers divided by their highest common factor is their lowest common multiple. 
  
im HCF and LCM inquiry 2
There are four pairs of integers which have a highest common factor of 6 and a lowest common multiple of 180.
Fractions
im Sum and product inquiry
The sum of two fractions equals their product. 
  
im Adding fractions inquiry
  
im Sum of unit fractions inquiry
The sum of two unit fractions is a unit fraction.
  
im Fraction of a number inquiry
  
im Fractions inequality inquiry
  
im Dividing fractions inquiry
Mixed numbers
im Mixed numbers inquiry
Fractions and decimals
im Converting fractions inquiry
Any fraction can be converted to a decimal and any decimal can be converted to a fraction.
  
im Recurring decimals inquiry
  
The decimal equivalent of a fraction with an even denominator terminates; the decimal equivalent of a fraction with a prime denominator recurs.
 
Percentages
im 40% of 70 = 70% of 40
  
im Percentage increase and decrease inquiry
 
im Compound interest inquiry
Compound interest of n% per annum for x years is greater than compound interest of x% per annum for n years.
Ratio and proportion
im Ratio inquiry
  
Surds
im Surds inquiry  
  
Indices (exponents)
im Indices inquiry
  
im Squares and cubes inquiry
  
im Laws of exponents inquiry
  
im Base and index inquiry
Inequalities
im Inequalities inquiry