wednesday maths

Number
Pull apart this number using place value
Round to nearest 10th
Round to nearest whole number (1)
Write as a fraction
Write as a percentage
Double of this number
Half of this number
20% of this number
This number x10
1.45
1 whole, 4 tenths and 5 hundredths
1.5
1
145/100
145%
2.90
0.725
0.435
14.5
0.32
3tenths, 2 hundredths
0.30
0
32/100
32%
0.64
16
0.064
03.2
0.99
9 tenths and 9 hundredths
1.0
1
99/100
99%
1.98
0.495
0.198
09.9
0.567
5 tenths 6 hundredths and 7 thousandths
0.600
1
56.7/100
56.7%
1.134
0.2835
0.1134
05.67
1.25
1 whole 2 tenths and 5 hundredths
1.0
1
125/100
125%
2.50
0.625
0.25
12.5
2.33
2 ones, 3 tenths and 3 hundredths
2.0
2
233/100
233%
4.66
1.165
0.466
23.3

Finding fractions (answer might be a whole number of a decimal)
⅓ of 10 3.33
⅘  of 50 40
1 ½ of 10  1.5x10= 15
⅔ of 180 120
⅕ of 1000 200
¾ of 100 25
⅔ of 900 600
⅘ of 450 360
7/10 of 70 49
4/6 of 60 40

Finding percentages
18/20 as a percentage = 18/20x100 =90
42/50 as a percentage =42/50 x 100= 84
32/35 as a percentage = 32÷35x100=91.42
20/30 as a percentage = 20÷30x100=66.66
3/15 as a percentage = 3÷15x100=153.33
20% of 30 =6
40% of 50 = 50÷100x40=20
80% of 80 = 80÷100x80=64
30% of 15 = 15÷100x30=4.5
75% of 40 = 40÷100x75=30

Finding decimals
 1.5+1.5=3.0
8-1.4=6.4
5-1.32=3.68
6-1.43=4.57
1-0.095=0.905

Word problems
There are 6 students in Room 4. The other three-quarters of the students in the school are in Rooms 1,2 and 3. How many students are in Rooms 1, 2 and 3? 18
Using a typing test, Miss Ashley correctly typed 20 words in 25.41 seconds. The next day, she typed 20 words in 24.98 seconds. How much faster did she get? 0.43
During the rugby tournament, Leon drank 1.2 litres of water and other juice. On a normal day back at school, he only drinks 0.345L of water. How much extra water did he have on the day of the tournament?0.55
Miss Ashley had the idea to sew masks for the kids when they come back to school. Each mask takes 0.33m of fabric to make. She has 8m of fabric. Does she have enough to make one mask each for her 26 students?
Bonus: If she doesn't have enough, how much more fabric would she need?
If you buy 1 litre of juice, it costs $1.50. If you buy the 5 litre bottle, it costs $5.99. If you want 10 litre of juice for a party, which should you buy and why?
5.99x2=11.98
1.50x10=15