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025_G3U16_WB_CA_˙—» ¿º 2011.4.5 6:36 PM ˘ ` 19 PDF_In 2540DPI 150LPI T
025-P3-1
Elapsed Time (2)
Jessica’s family left the house at 9:00 A.M. and came back the
next day at 11:00 A.M. How many hours did Jessica’s family
leave the house?
Step 1. How many hours are there from today 9:00 A.M. to tomorrow 9:00
A.M.?
Step 2. How many hours are there from 9:00 A.M to 11:00 A.M.?
Step 3. How many hours did Jessica’s family leave the house?
025-P3-1
Elapsed Time (2)
Jessica’s family left the house at 9:00 A.M. and came back the
next day at 11:00 A.M. How many hours did Jessica’s family
leave the house?
Step 1. How many hours are there from today 9:00 A.M. to tomorrow 9:00
A.M.?
Step 2. How many hours are there from 9:00 A.M to 11:00 A.M.?
Step 3. How many hours did Jessica’s family leave the house?
