You need to use 2 different strategies to answer the following questions:

193 - 35 = 158

Rounding And Compensate.

Subtract 3 from 193 which equals 190.

Subtract 3 from 35 which equals 32

190-32=158

Number Line

_-3_________-30______-2____

193 190 160 158

215 - 67 = 148

Subtract 5 from 215 which equals 210

Subtract 5 from 67 which equals 62

210-62=148

__-5______-10________-50_______-2_

215 210 200 150 148

315 - 73 = 242

Subtract 5 from 315 which equals 310

Subtract 5 from 73 which equals 68

310-68=242

___-5____-10_____-60_____________

315 310 300 240

62 x 5 = 310

5*60=300

2*5=10

300+10=310

Half the 62 which makes 31

31*5=155

31*5=155

155+155=310

92 x 6 =540

6*90=540

6*2=12

540+12=552

Half the 92 which makes 46

46*6=276

46*6=276

276+276=540

5.0 - 2.65=2.35

+0.05 +0.05

5.05-2.7=2.35

5-2=3

3-0.65=2.35

7.75 - 4.21 =3.54

-0.1 -0.1

7.74-4.2=3.54

7-4=3

0.75-0.21=0.54

3+0.54=3.54

6.0 - 2.79 =4.79

+0.1 +0.1

6.01-2.8=4.79

6-2=4

0.00-0.79=0.79

4+0.79=4.79

6.0 - 2.06 =3.94

+0.04 +0.04

6.04-2.1=3.94

6-2=4

0.0-0.06=0.06

4-0.06=3.94

Use two different strategies to answer the following questions:

There are 42 ladybugs on six leaves. How many ladybugs are on each leaf? 7

Split the 42 into 30 and 12.

30/6=5

12/6=2

5+2=7

21/6=3.5

21/6=3.5

3.5+3.5=7

To fill one jug it takes 4 litres. How many jugs can I fill with 28 litres?

Split 24 into 16 and 12.

16/4=4

12/4=3

4+3=7

14/4=3.5

14/4=3.5

3.5+3.5=7

To fill a bucket is takes 9 litres. How many buckets can I fill with 63 litres?

Split the 63 into 54 and 9.

54/9=6

9/9=1

6+1=7

31.5/9=3.5

31.5/9=3.5

3.5+3.5=7

I have 56 lollies I have to share with seven people. How many lollies will each person receive?

Split 56 into 49 and 7.

49/7=7

7/7=1

7+1=8

28/7=4

28/7=4

4+4=8

I have 36 lollipops, 1/ 4 of them are strawberry flavour. How many strawberry flavoured lollipops do I have?

36/4=9

9*1=9

Answer: 9

There are 168 children at Ruapotaka school and only 74 at Sommerville. How many students are there combined at the two schools? Use two strategies to work these questions.

168+74=246

166+72 I subtracted the 2 onto the 168 and 74 which equaled 166 and 72.

166+72=246.

160 and 8. Makes 168.

160+74=238

238+8=246

I had 42 lollies I had to share with 7 people. How many lollies does each person get?

Use two strategies to work these questions.

42÷7=6

Split 42 into 35 and 7.

35÷7=5

7÷7=1

5+1=6.

21÷7=3

21÷7=3

3+3=6

Miss Clark had a cake she cut in half. She then cut each of those pieces in half. How many pieces of cake are there? What would you call each piece of cake? Use two strategies to work these questions.

Miss Clark had a full cake. Then she cut it in half which there 2 pieces of cake now. Then she cut those pieces in half which now it makes 4. Answer: 4

I had $237, I went shopping and spent $69. How much money do I have left? Use two strategies to work these questions.

237-69=168

+1 +1

238-70=168

____-7________+60______________________-2___________

237 230 170 168

Six friends eat four cakes, what fraction of the cake do each of them get? Use two strategies to work these questions.

They each got 2 cakes. And one person eats their by their selves.

2 Friends each have 1 cake.

Now there’s 3 cakes left over.

2 Friends have each 1 cake.

There’s 2 cakes left over

1 friend haves 1 cake all to their self

Twelve friends eat four cakes, what fraction of the cake do each of them get? Use two strategies to work these questions.

They each have 1/3 of the cake.

3 Friends have 1 cake.

To fill my car tank, it takes 60 litres. Each litre costs 2.07cents. How much would it cost me to fill my tank? Use two strategies to work these questions.

It took 29 cents to fill up 60 litres.

2.07*29=60.03

It took Mosa, 4 minutes to iron 8 pairs of socks. How long does it take him to iron one sock only?

It would take 2 minutes.

8 1

*2___________________*2

4 2

It took me, 10 minutes to iron 30 pairs of socks. How long does me to iron one sock only?

It would take 3 minutes

30 1

*3_____________________________*3

30 3

Thursday:

Use the following strategies to answer the questions below

Strategy making hundreds

153 - 89 =64

153 - 100 = 53

53 + 11 = 64

322 - 57 = 180

322-100=222

222-42=180

162 - 86 =48

162-100=62

62-14=48

218 - 39 =57

218-100=118

118-61=57

Rounding and compensating

133 - 89 =44

133 - 90 I added one to 89 to make it 90.

133 - 90 = 43 + 1 = 44

320 - 57 =263

320-60 I added one 3 to 57 to make it 60.

320-60=260+3=263

124 - 86 =38

128-90 I added 4 to 86 to make it 90.

128-90=38

283 - 39 =

283 - 40 I added 1 to 39 to make it 40.

283-40=244

Equal addition

153 - 95 =58

158 - 100 = 58

Answer-58

322 - 75 =247

300-75=247

Answer-247

162 - 66 =96

160-66=96

218 - 92 =

Partitioning

153 - 95 =58

100 - 90 = 10

53 - 5 = 48

10 + 48 = 58

322 - 72 =248

300-70=230

20-2=18

230+18=248

162 - 76 =84

100-70=30

60-6=54

30+54=84

218 - 92 =118

200-90=110

10-2=8

110+8=118

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