Both are =, and the multiplication rule of two-digit numbers is that the unit of left and right numbers is multiplied by the unit = 10× 10, such as the first question, 12× 84 048× 2 1, 1× 8 = 2× 4.

A similar topic is: 36× 2 1.063× 12.

Multiplication of three digits, hundreds× hundreds = bits× bits, and ten digits are hundreds+bits. For example, the second question: 462× 48 084× 264, 4× 4 = 2× 8, 4+2 = 6.

Similar topics are:143× 31○ 34/kloc-0 /×13.