Table 2. Average numerical and partial distance of the single-digit and double-digit fraction pairs.

Fractions	Fraction pair	Numerical distance	Partial distance
Single-digit fractions	SD	0.37	0.97
	SN	0.55	0.97
	CO	0.76	1.5
	IC	0.34	1.5
Double-digit fractions	SD	0.17	1.44
	SN	0.19	1.56
	CO	0.18	1.31
	IC	0.17	2.25

Note: SD = same denominators; SN = same numerators; CO = congruent; IC = incongruent.