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P. 3
Activity 2
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Jess bought some food for Kere and Norman. It cost $76 altogether.
Norman’s food cost $19.
how much did Kere’s cost?
Work out the answers to these using tidy numbers.
Use a number line or number strips to show your working.
a $82 – $19 b $67 – $29 c $75 – $38
e $185 – $58 f $372 – $37 g $494 – $248
Logan earned $86 from busking. he spent $18 on new guitar strings. how much did he have left?
George entered a “Sing Like Someone else” competition.
It cost him $54 altogether to enter ($18 to hire the costume plus the entry fee.)
how much was the entry fee?
holly and Cody made 305 sandwiches for a parents’ evening. at the end of the evening there were 58 sandwiches left. how many sandwiches were eaten?
Work out the answers to these using tidy numbers.
a $1081 – $198 b $1382 – $159 c $2843 – $778
e $2309 – $468 f $5614 – $2597 g $4372 – $2138 the table shows the annual rainfall in three places.
d $153 – $18
h $376 – $249
d $4023 – $879 h $5476 – $3349
Location
Annual rainfall (mm)
Dunedin
812 mm
Christchurch
648 mm
Mount Cook
4293 mm
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What is the difference in rainfall between these?
a Dunedin and Christchurch b Mount Cook and Christchurch
Chapter 2 : aDDING aND SUBtraCtING Use a range of additive ... strategies with whole numbers .... USING tIDY NUMBerS
