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2,500
Believes the gradient of a line is given by an intercept
2,501
Subtracts rather than multiplies when calculating total frequency
2,502
Believes a reciprocal equation will have a quadratic graph
2,503
Believes that a greater percentage represents a greater quantity
2,504
Does not realise that two letters together, or a number and letter together, are multiplying
2,505
Confuses cl and ml
2,506
Believes cumulative frequency is the sum of each class with the previous class, rather than all previous classes
2,507
Mistakes unit of speed for unit of time
2,508
Thinks x = ? is the y axis
2,509
Mixes up the sets in a Venn diagram
2,510
Only reads the percentage symbol as applying to the units digit
2,511
Does not know the properties of a linear graph
2,512
Believes when dividing numbers with the same base you divide the powers, rather than subtracting
2,513
When finding the nth term rule for a quadratic sequence, believes that the coefficient of n squared is determined by first differences
2,514
Does not cube the conversion factor when converting cubed units
2,515
Rounds too early in calculation
2,516
Thinks 3-letter angle notation has to use the nearest vertex on each side of the angle
2,517
Does not rearrange the Pythagoras' Theorem formula accurately
2,518
May have made a calculation error using the order of operations
2,519
Confuses a term with a variable
2,520
Believes the fraction line represents addition
2,521
Does not know how to measure reflex angles
2,522
Believes the total of the circle in a Venn should be included when intersections should be omitted
2,523
Has added on the power of 1/4 rather than raise to the power of 1/4
2,524
Has added the powers rather than multiplying them
2,525
When dividing decimals, divides rather than multiplies when reinserting the decimal.
2,526
Believes a downward line has a positive gradient
2,527
Writes a repeated root once, rather than in a squared bracket
2,528
Thinks that the perimeter on a square grid is the number of squares surrounding the rectangle
2,529
Does not think a ton is a unit of mass
2,530
Subtracts instead of adds when using inverse operations to solve an equation
2,531
Does not understand that the volume of an enlarged shape is the volume of the original multiplied by the cube of the scale factor of the lengths.
2,532
Believes order of operations does not affect the answer to a calculation
2,533
Does not realise that two letters together are multiplying
2,534
When converting between non standard form and standard form assumes changes to the base will not affect the power
2,535
Does not add on 180 degrees when using a protractor to measure a reflex angle
2,536
Misunderstands the capture-recapture method
2,537
Does not know the definition of a rational number
2,538
Confuses the value of the variable with cumulative frequency
2,539
Believes the inverse of square rooting is halving
2,540
Confuses maximum and minimum
2,541
When finding the square root of a decimal, believes the answer should have the same number of decimal places
2,542
Believes that dividing by a decimal is the same as dividing by its reciprocal
2,543
Believes the frequency represented by a pie chart sector can be judged visually, without considering the total it represents
2,544
Confuses reciprocal and exponential graphs
2,545
Does not know that prime numbers have exactly two factors
2,546
Confuses the hundreds and tens place value columns
2,547
Multiplies instead of divides when division is written as a fraction
2,548
Does not increase the denominator when an item is added in a probability question
2,549
Believes only the first term needs to be divided when factorising an expression
2,550
Thinks there are 10m in a km
2,551
Believes range does not need units
2,552
When adding decimals, thinks the answer has to have the same number of decimals as the total in the question
2,553
Gives the second significant figure when asked for the first
2,554
Thinks the diagonal of a square is the same length as the side of the square
2,555
Does not understand how to find a scale factor
2,556
Thinks the subtraction sign means multiply
2,557
Mixes up cubing and squaring
2,558
When writing fraction from diagram, writes total as denominator
2,559
When dividing numbers with different bases subtracts the powers but divides the base numbers.
2,560
Confuses the formulas for the perimeter of a sector and the area of a sector
2,561
Believes a sample space should show repeated outcomes, not just unique possible outcomes.
2,562
Confuses the lower and upper bound
2,563
Believes to complete a part whole model you select a value already given in the model
2,564
Gives the intersect value of a Venn diagram when asked to find the value of a set only
2,565
Confuses the hundreds and thousands place value columns
2,566
When subtracting a negative number, subtracts the absolute value rather than adding it
2,567
Believes they only need to multiply the first pair of terms when expanding a double bracket.
2,568
Believes all the multiples of a number will also be multiples of its multiples
2,569
Confuses pentagon and hexagon
2,570
Confuses interior angles with exterior angles
2,571
When dividing numbers with different bases, divides the powers and divides the base numbers.
2,572
Rotates by the wrong center of rotation (not including the origin)
2,573
Believes the solution to mx + c = a is the y intercept of y = mx +c
2,574
Believes that when multiplying by a power of 10 you add zeroes after the decimal point
2,575
Thinks adding same amount to each side of a ratio gives an equivalent ratio
2,576
Mixes up square numbers and cube numbers
2,577
Does not think a square root can be negative
2,578
Mixes up sides of a ratio, when working with vectors for line segments.
2,579
Forgets to add the numerator when converting from a mixed number to an improper fraction
2,580
Believes degrees can be used to measure length
2,581
When factorising a quadratic with a coefficient of x squared, believes the signs and/or positions of the constants are interchangeable
2,582
When multiplying numbers with the same base, multiplies the powers
2,583
Does not know what a cube number is
2,584
Believes that any percentage of a larger number will be greater than any percentage of a smaller number
2,585
Believes a cubic expression should have three terms
2,586
Misunderstands order of operations in algebraic expressions