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Answers to the second volume of the fourth grade math book
Multiplicative commutative law)

4×6×5×8=(4×8)×(6×5) (multiplication law) 4. What multiplication laws are used to decompose the following equations?

106×25=25× 106 (multiplicative commutative law)

5× 17×4=5×4× 17 (multiplicative commutative law)

13×3×2= 13×(3×2) (multiplicative associative law)

25×8×4=8×(25×4) (multiplicative associative law