Evaluate $8+4\times5$8+4×5
Evaluate $10+16\div4$10+16÷4.
Evaluate $6\div3\times4$6÷3×4
Evaluate $6-15\div5$6−15÷5
Natural numbers, whole numbers, properties of numbers (commutative, associative, distributive, additive identity, multiplicative identity), number line.