3000 examples in mathematics. The best training with methodological recommendations. Examples with "windows". We multiply. Divide. four

The manual contains examples on the basic topic of the elementary school “Extra -table multiplication and division”.
In the examples with “windows”, one of the components of multiplication (first or second multiplier) and division (divisible or divisor) or a sign of action was missed. The child must determine what is missed in the example and how to find it. Such examples are an excellent training for the formation of the skill of performing oral calculations, as well as for the development of the ability to establish causal relationships when choosing a solution method.
Methodological recommendations on the second and third sides of the cover will help effectively organize work in the classroom and at home