# Step 4

Difficulty 4

 1 When You Gotta Mow... 2 - minutes between 1:15pm and 2:46pm 2 Great Southern Land 2 - Australian time zones, daylight savings 3 When You Gotta Mow... 3 - calculate total duration 4 Endless Time 7 - Australian time zones 5 Turning The Tables of Time 2 - writing time in words, 24 hour time and 12 hour time 6 The Test Of Time 2 - 75 minutes before 6:00pm 7 A World Of Difference 2 - international time zones 8 Goal Posts Bus Service Timetable 3 - calculate total time spent each week 9 Abigail's Timetable 6 - time spent doing homework over 5 days in hours and minutes 10 Travel Time 5 - calculate time between 08:45 and 14:35 11 Early To Bed, Early To Rise - calculate duration of night 12 Picnic at Periwinkle Park - complete timetable, 23 minute intervals 13 Race Against Time 1 - calculate duration in hours and minutes 14 Time Travels 5 - time zone calculations 15 Cory's Cooking Craze - conversion from L in decimals to fractions of a L 16 Cory's Cooking Craze - conversion from L in decimals to fractions of a L 17 Talking Maths - time to fill bath, 2 measures of L/min 18 Pumping Maths - time to fill fuel tank given rate 19 Cory's Cooking Craze - conversion from fractions of L to decimal 20 The Sanders Family Pool! - time taken to fill pool from 40000L to 43000L 21 A Thousand Kilos of Laughs - conversions between units; cubic cm, mL, L 22 Un-Tangling The Area - expression for calculating area of a rectangle 23 Un-Tangling The Area - expression for calculating area of a rectangle 24 Un-Tangling The Area - expression for calculating area of a rectangle 25 Face Value - calculate areas of faces, rectangular prism, total surface area 26 Face Value - calculate areas of faces, rectangular prism, total surface area 27 Face Value - calculate areas of faces, rectangular prism, total surface area 28 Face Value - calculate areas of faces, rectangular prism, total surface area 29 Rec-tangles - calculate side length in cm using area in square m, 2 decimal places 30 Rec-tangles - area of rectangle in square m, lengths in mm and m 31 Rec-tangles - area of rectangle in square km, lengths in m and km 32 You Go Figure - calculate missing side length in m, area in square m 33 You Go Figure - calculate missing side length in m, area in square m 34 You Go Figure - calculate missing side length in mm, area in square mm 35 Gluttonous Grasshoppers - 1 000 000 square m as hectares 36 Gluttonous Grasshoppers - 5 000 000 square m as square km 37 Crop Crisis - area in hectares, dimensions in m 38 Man Power - double 1 square m, in square cm 39 Reasoning With Rectangles - find rectangle/square, area in square cm 40 A Measure Of Confusion 1 - approximate number of objects fit in a given length; km; decimals 41 Wrecked Angles 1 - calculate width of rectangle given area and length 42 Fair and Square 1 - calculate area of square given perimeter 43 Around The Square - calculate perimeter of square given area 44 The Secret Formula 3 - calculate rectangle side length given one side 45 The Secret Formula 2 - calculate rectangle side length given one side 46 The Secret Formula 1 - calculate rectangle side length given one side and area 47 Wrecked Angles 2 - calculate width given area and length 48 Home Sweet Home 1 - calculate lengths on floor plan 49 Rule The World 5 - mm to km 50 Picture It 1 - perimeter problem; cm 51 Round and Round the Garden... 2 - perimeter problem using area 52 Sugar High? - subtracting g from kg 53 Sugar High? - adding g to kg, 2 decimal places 54 Bush Bake Off - round g to nearest tenth of a kg 55 Karl's Cargo Chaos - calculate number of cartons that can be carried based on given masses 56 Larry's Lorry's Log Book - conversion from t to kg; 3 decimal places 57 Karl's Cargo Chaos - calculate number of cartons that can be carried based on given masses 58 Larry's Lorry's Log Book - conversion from kg to t; 3 decimal places 59 Phil The Fruiterer - calculate best value given masses and prices 60 Phil The Fruiterer - calculate best value given masses and prices 61 Clean Phil Wanted... - calculate number of units given individual and gross masses, g/kg 62 Al's Mass Mechanics - adding masses in kg and g, 3 decimal places 63 Mass Composition - conversion from g to kg, total mass of multiples