Question 109
Express 1.5×1062.5×10−4 in the standard form.
1.5×1062.5×10−4 =1525×105+4 =35×1010 =0.6×1010 =6×10−1×1010=6×109
Question 106
Write 390000000 in the standard form.
Express the product of 3.2×106 and 4.1×10−1 in the standard form.
Question 4(v) Simplify: (2.5p−1.5q)2−(1.5p−2.5q)2