Rounded Values & Truncated Measures

Interactive macro-enabled MS-Excel spreadsheet. Contents: Round a given value to a specified place value or power of ten. Round a given value to a specified number of decimal places. Round a given value to a specified number of significant figures. Round a given value to a specified power of ten using a № line. Round a given value to a specified number of d.p. using a № line. Round a given value to a specified number of s.f. using a № line. Truncate a measure to a specified number of decimal places. Truncate a measure to a specified number of significant figures. Specify an error interval due to a truncation using inequalities. Represent the true range of values of a rounded № on a diagram. Write upper & lower bounds of rounded measures as inequalities. Estimate the value an arrow points to on a № line (nearest integer). Estimate the value an arrow points to on a № line (1 d.p. or 2 d.p.).