S1 (1.2) L 3 Decimals.notebook September 24, 2015 - Weebly · 2018. 9. 9. · S1 (1.2) L 3 Decimals.notebook September 24, 2015 Daily Practice 3.11.2014 Q1. Round 88.94 to the nearest

S1 (1.2) L 3 Decimals.notebook September 24, 2015

Daily Practice 3.11.2014

Q1. Round 88.94 to the nearest unit

Q2. 4 x -7

Q3. -5 - (-6)

Q4. 20 x 40

Q5. 29.88 + 36.9

Today we will be learning how to add and subtract decimals.

Homework Due Wednesday!

Adding and subtracting decimals 3.11.2014

Always ensure each digit has it's correct place value and the number that has the greater value is on top when adding.

Examples:

(a) 22.4 + 3.677 (b) 30 - 5.89 (c) 28.1143 - 7

Adding and subtracting decimals 3.11.2014Daily Practice 5.11.2014

Q1. Find 25% of 70


Q3. Find 4/7 of 2849

Q4. -9 x 6

Q5. (3 x 2) ÷ -2


Today we will be learning how to multiply decimals.

Multiplying Decimals



Q1. 4522 x 90


Q3. If 2 x k - 1 = 17, what is k?

Q4. -36 ÷ -6

Q5. Calculate the perimeter

5.5cm

Today we will be learning how to multiply trickier decimals

and divide with decimals.

0.4 0.006 x 0.008

Multiplying trickier Decimals 6.11.2014

0.026 x 0.7



Q1.

Find 50% of 26Q2. 32.77 + 1.018

Q4. Write down a prime

number between 40 and 50

Q3. 3 x (-4) x (-5)

Q5) 0.2 x 0.03 Today we will be learning to divide with decimals.

Dividing with Decimals Division Questions

Q1) 441 ÷ 2

Q2) 3.305 ÷ 5

Q3) 2.97 ÷ 3

Q4) 40.18 ÷ 5

Q5) 303.2 ÷ 2

Q6) 673.2 ÷ 9

Q7) 10.2 ÷ 6

Q8) 101.5 ÷ 7

Q9) 361.6 ÷ 8

Q10) 54.96 ÷ 8

Q11) 8.64 ÷ 8

Q12) 20.45 ÷ 4

Q13) 250.56 ÷ 2

Q14) 1.0812 ÷ 4

Q15) 5.49 ÷ 90

Division Questions

Q1) 441 ÷ 2

Q2) 3.305 ÷ 5

Q3) 2.97 ÷ 3

Q4) 40.18 ÷ 5

Q5) 303.2 ÷ 2

Q6) 673.2 ÷ 9

Q7) 10.2 ÷ 6

Q8) 101.5 ÷ 7

Q9) 361.6 ÷ 8

Q10) 54.96 ÷ 8

Q11) 8.64 ÷ 8

Q12) 20.45 ÷ 4

Q13) 250.56 ÷ 2

Q14) 1.0812 ÷ 4

Q15) 5.49 ÷ 90

2

73

4

6

9



Q1. 4 x 5 - 2 + 3

Q2. Find 3/7 of 2149

Q3. 17.24 + 1.005

Q4. 0.008 x 0.9

Q5. -5 + (-15)

Today we will be learning to divide decimals

by decimals.

÷ 0.9 (c) 0.48 ÷ 0.006

Decimals dividing by decimals 12.11.14

To divide a number by a decimal, make the decimal a whole number first by multiplying both numbers by a multiple of 10.


Q1. Round 3569 to the nearest hundred

Q2. Find 25% of 60

Q3. 6 - 3 x 5

Q4. 21.45 x 60 Q5. 0.16 ÷ 0.02

Today we will be dividing decimals by decimals

and reading decimal scales.


Trickier decimal division

http://www.mathworksheets4kids.com

Trickier decimal division

(i) 0.428 ÷ 0.002 (j) 0.036 ÷ 0.0004

(k) 0.12 ÷ 0.003 (l) 0.2466 ÷ 0.06

(m) 0.065 ÷ 0.5 (n) 0.459 ÷ 0.0009

(o) 0.3224 ÷ 0.8 (p) 0.0497 ÷ 0.07

Decimal Scales Decimal Scales

Decimal Scales Decimal Scales


12 13

1.5 2

2.5 2.6

0 0.5

(a) (b)

(c) (d)

3 Daily Practice 19.11.14

20 Questions Mental Maths

Today we will be going over the homework and

learning to round to decimal places.



Q1. Write two hundred thousand and eighty three in digits

Q2. 6 ‐ 5 x 4

Q3. ‐4 x (‐8)

Q4. 6 ‐ (‐1)

Q5) 0.56 ÷ 0.007

Today we will be learning about rounding to the nearest

unit & decimal places.

Rounding Decimals

Rounding a number to the nearest unit (nearest whole number).

H T U . t h th

Examples: Round to the nearest unit

(a) 3.4

(b) 75.182

3.53 4

Round each of these to the nearest unit

(i) 2.6 (ii) 3.22 (iii) 7.95 (iv) 14.715

(v) 18.225 (vi) 157.63 (vii) 44.8177


Rounding to 1 decimal place

Rounding a number to 1 d.p. means to leave 1 digit after the decimal

point.

Examples: Round these to 1 decimal place

(a) 3.24

(b) 1.855

(c) 2411.299

(d) 101.99

Rounding Decimals

Round each of the following to the 1 decimal place

(a) 22.91

(b) 43.24

(c) 2.87

(d) 19.9132

(e) 20.473

(f) 38.129

(g) 43.456

(h) 9.921

(i) 2035.10987 (j) 2.44138 (k) 10.8991

Round these to 2 decimal places

(c) 41.256 (d) 38.1622

2 decimal places means to leave 2 digits after the decimal point Daily Practice 26.11.14

20 Questions Mental Maths

Documents

S1 (1.2) L 3 Decimals.notebook September 24, 2015 - Weebly · 2018. 9. 9. · S1 (1.2) L 3 Decimals.notebook September 24, 2015 Daily Practice 3.11.2014 Q1. Round 88.94 to the nearest