Best year 1 learner (and parent)

Welcome in week 2. Thank you for the effort to do your Mathematics.

Remember that all work needs to be at school when we return.

Regards

Mrs E Retief

Term 2 Week 2 – Numbers and calculations ( continue)

Monday 20-04-2020 Rounding off

Tuesday 21-04-2020 Multiples

Wednesday 22-04-2020 Addition

Thursday 23-04-2020 Subtraction

Friday 24-04-2020 Word Problems

KWAGGASRAND SCHOOL

MATHEMATICS

JAAR 1

LEARNER WORK DURING LOCKDOWN

TERM 2 WEEK 2

TEACHER: MS. E. RETIEF

To round off to the nearest ten (10) keep the following in mind:

If the number is a multiple of ten, leave it as it is (if it is, 10 ; 20 ; 30 ; 40... is).

If the unit place value digit is smaller than five (5), change the digit to a 0.

If the unit place value digit is bigger than five, add one to the tens place

value and change the unit digit to 0.

Examples for rounding off to the nearest 10:

27 rounded off ≈ 30, because the unit place value digit is 7 (bigger than 5).

53 rounded off ≈ 50, because the unit place value digit is 3 (smaller than 5).

30 rounded off ≈ 30, because it is already a multiple of 10.

48 ≈ 50 14 ≈ 10

169 ≈ 170 585 ≈ 590

303 ≈ 300 7 894 ≈ 7 890

REMEMBER:

Use the correct symbol when rounding off. ≈ NOT =

LESSON 5 – ROUND OFF TO THE NEARST 10 AND 100 20-04-2020

1. Use the number lines to help you round the following numbers off to the nearest

10.

a)

36 ≈ _____

73 ≈ _____

b)

45 ≈ _____

64 ≈ _____

c)

38 ≈ _____

55 ≈ _____

62 ≈ _____

78 ≈ _____

2. Round the following numbers off to the nearest 10.

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

To round off to the nearest hundred (100) keep the following in mind:

If the number already is a multiple of 100, leave it as it is (if it is 100 ; 200 ;

300 ; 400...).

If the tens place value digit is less than five (5), change the tens and the

unit values to 0..

If the tens place value digit is more than five (5), add one to the hundred

value and change the tens and unit values to 0.

Examples for rounding off to the nearest 100 100:

273 rounded off ≈ 300, because the tens place value is 7 (bigger than 5).

638 rounded off ≈ 600, because the tens value is a 3 (smaller than 5).

500 rounded off ≈ 500, because it is already a multiple of 100.

123 ≈ 50 941 ≈ 10

458 ≈ 170 1 269 ≈ 590

369 ≈ 300 7 894 ≈ 7 890

REMEMBER:

Use the correct symbol when rounding off. ≈ NOT =

3. Use the number lines to help you round the following numbers off to the nearest

100.

a)

370 ≈ ______

710 ≈ ______

b)

340 ≈ ______

550 ≈ ______

c)

380 ≈ ______

530 ≈ ______

680 ≈ ______

750 ≈ ______

4. Round the following numbers off to the nearest 100.

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

≈

END LESSON 5

Multiples can be described as the answers of your time tables.

Multiples of 2: 2 ; 4 ; 6 ; 8 ; 10….

Multiples of 10: 10 ; 20 ; 30 ; 40 ; 50…

Multiples of 50: 50 ; 100 ; 150 ; 200 ; 250 ; 300…

Multiples of 100: 100 ; 200 ; 300 ; 400 ; 500…

Why do we say it is the answers of time tables?

1 x 3 = 3 5 x 3 = 15

2 x 3 = 6 6 x 3 = 18

3 x 3 = 9 7 x 3 = 21

4 x 3 = 12 8 x 3 = 24

What is the first 8 multiples of 3

3 ; 6 ; 9 ; 12 ; 15 ; 18 ; 21 ; 24…

LESSON 6 – MULTIPLES 21-04-2020

1. Answer the following questions about multiples:

a) What is the first four multiples of 9: _____ ; _____ ; _____ ; _____

b) What is the first four multiples of 1: _____ ; _____ ; _____ ; _____

c) What is the first four multiples of 4: _____ ; _____ ; _____ ; _____

d) What is the first four multiples of 10: _____ ; _____ ; _____ ; _____

e) What is the first four multiples of 5: _____ ; _____ ; _____ ; _____

f) From the following numbers, list all that are multiples 7?

1 7 14 17 21 27 35

_____________________________________________________________________

g) From the following numbers, list all that are multiples 8?

38 40 45 49 64 72 81

_____________________________________________________________________

h) Look at the multiples of 4, are they all even or uneven numbers? Why?

_____________________________________________________________________

_____________________________________________________________________

i) Look at the multiples of 3, are they all even or uneven numbers? Why?

_____________________________________________________________________

_____________________________________________________________________

2. This question is optional. Help the space ship to get back to earth by circling

all the multiples of ten, from 10 to 480.

END LESSON 6

LESSON 7 – ADDITION CALCULATIONS 22-04-2020

1. Complete the following calculations.

Part 1:

Part 2:

END LESSON 7

LESSON 8 – SUBTRACTION CALCULATIONS 23-04-2020

1. Complete the following calculations.

END LESSON 8

LESSON 9 – WORD PROBLEMS 24-04-2020

1. Complete the following word problems. Remember to always write a

calculation. .

Example:

Sara picked up 75 sea shells and 32 stones on the beach. She gave

some of the shells to her brother. She only has 29 shells left, how many

shells did she gave to her brother?

75 – 29 =

7 6 15

- 2 9

4 6

Answer: Sara gave 46 of the shells to her brother.

a) Tom has 40 marbles in his container. He won a couple more during

break. There are now a total of 54 marbles in the container. How

many marbles did Tom win?

b) The first rugby team played 14 games during the season. They won

most of their games and were only defeated in four (4) games. How

many games did they won?

c) Melanie bakes a cake. The recipe asks for 6 cups of flour. Melanie

already added 3 cups, how many cups must she still add?

d) There were two roses in a vase. Sara got more roses from the garden

and added them in the vase, there are now a total of 19 roses in the

vase. How many roses did Sara get from the garden?

e) Sally collets old coins. She got 31 coins from her brother, 30 from her

mother and 26 coins from her grandmother. What is the total number

of coins that Sally has?

f) Benny build 3 towers with blocks. The first tower was four (4) blocks

high, the second tower was 7 blocks higher than the first tower and the

third tower was higher 4 blocks higher than the third tower. How many

blocks di d Billy use to build his towers? .

END LESSON 9