Evaluate $2.5\times7-1.8$2.5×7−1.8, writing your answer in its simplest form.
Evaluate $55\div5-1.5$55÷5−1.5
Evaluate $1.8\times7+2.3$1.8×7+2.3, writing your answer in its simplest form.
Evaluate $25\div5+1.4$25÷5+1.4
Consolidation of operations on rational numbers.