garciarigoberto8465 garciarigoberto8465
  • 04-07-2018
  • Social Studies
contestada

By the age of ____ years, most children have learned the addition tables so well that the sums of single digit numbers can be retrieved from memory rather than recalculated.

Respuesta :

brigat444
brigat444 brigat444
  • 04-07-2018
Im going to go with 7 years old
Answer Link

Otras preguntas

Explain how a species can evolve through natural selection.
What is the mean of 87, 93, 86, 90, and 84?
“The genetic code is universal.” Explain this statement.
An airplane travels 3,260 kilometers in 4 hours. What is the airplane’s average speed?
Which of the following organisms can perform alcoholic fermentation? (1) yeast, (2) humans, (3) bacteria. a. 1 and 2 b. 1 and 3 c. 1 only d. 1, 2, and 3
which factor made the most difference in how agriculture affected the economies of the colonies?
How many atoms are in 0.750 moles of zinc?
“The genetic code is universal.” Explain this statement.
you measure or observe two events to occur at the same time one nearby and one further away. Which one did you actually see first?
Find all powers of 4 in range 4 through 1,000