Chains of examples. Counting within 1000. For children aged 9-10 years
Regular classes with math drills gradually develop a child's solid skills in computational operations: while practicing, they will learn to perform addition, subtraction, multiplication, and division as quickly as possible, moving from simple to complex.
Regular classes with math drills gradually develop a child's solid skills in computational operations: while practicing, they will learn to perform addition, subtraction, multiplication, and division as quickly as possible, moving from simple to complex.
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The product is delivered directly from the publisher. The order processing time is up to 14 days, you will receive the exact delivery date from the operator after the order confirmation.