Mathematics for IGCSE & O level - Limits Of Accuracy (Section 1 - No. 35)
Two kitchen cupboards have widths of 300 mm and 500 mm correct to the nearest millimetre. What is the upper bound of the combined width of the cupboards?
799.5 mm
800.0 mm
800.5 mm
801.0 mm
คำอธิบาย
Upper bound of the combined width is the sum of the upper bounds of the individual widths. 300.5 + 500.5 = 801.0mm, however the correct answer in the given image is 800.5mm