The shorthand addition of children within ten years is: 1+ 1 = 2, 1+2 = 3, 1+3 = 4, 1+4 = 5,1+5 = 6,660. 1+8=9, 1+9= 10。 Addition within ten, 2+2 gets four, 2+4 gets six. Two plus three equals five. And so on. Mathematical addition is easy to remember, because addition within ten categories is quite simple. We should do more exercises and strengthen arithmetic. You can recite arithmetic answers if it is inconvenient.

Definition of addition and subtraction within ten

Understand the meaning of addition and subtraction. Add two numbers, calculate how much a * * * is by addition, subtract a part from the total, calculate how much is left by subtraction, remove one part from the two parts, and calculate the other part by subtraction. Practice addition and subtraction within 10, from one formula in one figure to two formulas in one figure and then to one formula in four figures, deepen the understanding of the meaning of addition and subtraction, and realize the connection between two addition formulas and two subtraction formulas.