2 | 4 | ____ | 18 | 2 | 4 | ____ | 18 | 2 |
8 | 12 | ____ | 40 | 8 | 12 | ____ | 40 | 8 |
45 | 40 | ____ | 5 | 45 | 40 | ____ | 5 | 45 |
30 | 27 | ____ | 6 | 30 | 27 | ____ | 6 | 30 |
- Draw a circle around:
The multiples of 10: | 20 | 100 | 36 | 50 | 42 | 30 | 21 | 60 |
The multiples of 4: | 40 | 21 | 36 | 18 | 24 | 16 | 20 | 6 |
The multiples of 3: | 27 | 32 | 18 | 24 | 10 | 30 | 20 | 12 |
The 4th multiple of 2 is _____. 20 is the ____th multiple of 2.
The 3rd multiple of 3 is _____. 2 1 is the ____th multiple of 3.
The 2nd multiple of 4 is _____. 28 is the ____th multiple of 4.
The 6th multiple of 5 is _____. 40 is the ____th multiple of 10.
How many eyes do nine rabbits have? ________ eyes
How many wheels do 7 tricycles have? ________ wheels
How many fingers do 4 children have? _______ fingers
Bonny and Tommy earn their pocket money by doing jobs around the house. They receive 10c for every job they do.
Now we must count their pocket money.
Remember: 10 ten cent coins are R1 or 100c = R1
- Here is Bonny’s pocket money.
- Bonny earned ______________
- How many jobs did she do?
She did ___________________ jobs.
- Here is Tommy’s pocket money.
- Tommy earned ________________
- How many jobs did she do?
She did ___________________ jobs.
- Tommy earned ______ c more than Bonny , because he did ______ more jobs than Bonny.
Bonny and Tommy have discovered the pattern to count in tens.
- Complete:
10 | 20 | ___ | ___ | ___ | ___ | ___ | ___ | ___ | ___ | 110 | ___ |
50 | 60 | ___ | ___ | ___ | 100 | ___ | ___ | ___ | ___ | 150 | ___ |
80 | 90 | ___ | ___ | ___ | ___ | 140 | ___ | ___ | ___ | ___ | ___ |
110 | 100 | ___ | 80 | ___ | ___ | ___ | ___ | ___ | ___ | ___ | 0 |
180 | ___ | 160 | ___ | 140 | ___ | ___ | ___ | ___ | ___ | ___ | 70 |
Use your own methods to solve the problems.
- Yesterday there were 1 10 children on the soccer field. Today there are 10 more. How many children are there today?
There are ______ children today.
- Dad planted 140 carrots, but Bonny and Tommy have already eaten 30. How many carrots are left in the garden?
There are _______________________________.
- Bonny and Tommy say that 10 x and ÷ are easy, because they know how to work with money.
- Do you still remember the "tens bugs" ?
Bonny says we must do it without the dots now.
9 + 4 = ( 9 + 1 ) + 3 = ____
8 + 6 = ( 8 + ____) + ____ = ____
7 + 5 = ( 7 + ____) + ____ = ____
6 + 6 = ( 6 + ____) + ____ = ____
- Tommy says he changes the numbers around sometimes, because he finds it easier to group the higher number as a ten. Watch carefully how he does it.
4 + 8 = 8 + 4 = ( 8 + 2 ) + 2 = 12
5 + 9 = 9 + 5 = ( 9 + ____) +____ = ____
6 + 8 = 8 + 6 = ( 8 + ____) +____ = ____
3 + 9 = 9 + 3 = ( 9 + ____) +____ = ____
4 + 7 = 7 + 4 = ( 7 + ____) +____ = ____
- Complete:
Assessment
Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.
Assessment Standard 1.1: We know this when the learner counts forwards and backwards in:
1.1.1 the intervals specified in grade 2 with increased number ranges;
Assessment Standard 1.6: We know this when the learner solves money problems involving totals and change in rands and cents, including converting between rands and cents;
Assessment Standard 1.8: We know this when the learner can perform calculations, using appropriate symbols, to solve problems
Assessment Standard 1.9: We know this when the learner performs mental calculations;
Assessment Standard 1.10: We know this when the learner uses the following techniques:
1.10.1 building up and breaking down numbers;
1.10.2 doubling and halving;
1.10.3 number-lines;
1.10.4 rounding off in tens.