Expressions with a variable
A letter instead of a box gives an expression with a variable. Put in the value of the variable and work out the value of the expression. Ukrainian grade 2.
- أوكرانيا: الصف ٢
- روسيا: الصف ٢
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الدليل
A studio for Ukrainian grade 2 (the NUS textbook «Meet expressions with a variable»). The expressions 9 + 3, 9 + 4, 9 + 5 are numerical. If a letter replaces the box, for example ٩ + a, we get an expression with a variable. The letter a can stand for different numbers: its values.
To find the value of an expression with a variable, put the number in place of the letter. If a = 3, then ٩ + a = ٩ + ٣ = ١٢.
In each task the left column is the value of the variable and in the right one you write the value of the expression. In grade 2 letters appear only with + and −, plus the expression n + n.