Math Subtraction Activities and Practice
Block 1 – Week 3
Subtraction – Crossing 10 (1)
Subtraction – Crossing 10 (2)
Step: Subtraction – Crossing 10 (1)
Lesson 1
Fluency
-
- 3
-
=
9
3
12
Fluency
-
- 7
-
=
9
7
16
-
- 6
-
=
8
6
14
Fluency
First there were 11 apples.
Then 4 were taken away.
How many now?
- 4
-
=
7
4
11
Fluency
- 9
-
=
8
9
17
First there were 17 cherries.
Then 9 were taken away.
How many now?
Fluency
- 7
-
=
5
7
12
First there were 12 pears.
Then 7 were taken away.
How many now?
Beth says,
The number line represents
the subtraction problem.
Do you agree with Beth? Explain your answer
- 4
No, the number line shows 13 – 4 = 9.
It should show 13 – 5 = 8.
Problem
solving
First there were ______ pencils.
Then 7 were taken away.
Now there are 5.
Show this on ten frames.
12
Step: Subtraction – Crossing 10 (1)
Lesson 2
Recap: Match the bonds to 10.
Fluency
Complete the subtraction using ten frames and a number line.
-
12
=
5
7
12 – 2 = 10
10 – 3 = 7
2
3
Fluency
-
15
=
9
6
15 – 5 = 10
10 – 4 = 6
5
4
Complete the subtraction using ten frames and a number line.
Fluency
-
14
=
6
8
14 – 4 = 10
10 – 2 = 8
4
2
Complete the subtraction using ten frames and a number line.
Fluency
-
18
=
9
9
18 – 8 = 10
10 – 1 = 9
8
1
Complete the subtraction using ten frames and a number line.
Fluency
-
13
=
8
5
13 – 3 = 10
10 – 5 = 5
3
5
Complete the subtraction using ten frames and a number line.
Fluency
-
11
=
5
6
11 – 1 = 10
10 – 4 = 6
1
4
Complete the subtraction using ten frames and a number line.
The ten frames show 15 – 6.
False. The ten frames show 14 – 7 = 7.
True or false? Explain your answer.
Problem
solving
-
=
Use the counters below to create a subtraction that will give an
answer
more than 5
but
less than 10
.
Possible answers:
13 – 4 = 9, 13 – 5 = 8, 13 – 6 = 7, 13 – 7 =6.
List the different combinations.
?
?
13
Step: Subtraction – Crossing 10 (1)
Lesson 3
Fluency
-
13
6
-3
-
13
=
3
-
=
3
10
7
-3
3
3
10
Complete the subtraction using ten frames and a number line.
Fluency
-
14
5
-4
-1
-
14
=
4
-
=
1
10
9
4
1
10
Complete the subtraction using ten frames and a number line.
Fluency
-
16
8
6
-6
-2
-
16
=
6
-
=
2
10
8
2
10
Complete the subtraction using ten frames and a number line.
Fluency
-
18
9
-8
-1
-
=
8
-
=
1
10
9
1
8
18
10
Complete the subtraction using ten frames and a number line.
Fluency
-
11
8
-1
-7
-
=
1
-
=
7
10
3
11
10
7
1
Complete the subtraction using ten frames and a number line.
Fluency
-
12
7
-2
-5
-
=
2
-
=
5
10
5
12
10
5
2
Complete the subtraction using ten frames and a number line.
Matt says,
I had 13 sweets.
I gave Gina 6 of them.
I still have more sweets than Gina.
Is Matt correct?
Explain how you know.
Matt is correct, he does have more sweets than Gina as 13 – 6 = 7.
Matt has 7 sweets and Gina has 6 sweets.
Problem
solving
Write a story to represent the subtraction shown on the
ten frames.
What number sentence represent this?
17 – 9 = 8
17 – 7 = 10
10 – 2 = 8
Step: Subtraction – Crossing 10 (2)
Lesson 4
Fluency
Complete the number sentences.
-
=
6
5
First there were _______ counters.
Then _______ counters were taken away.
Now there are _______ counters.
11
6
5
11
Fluency
Complete the number sentences.
-
=
7
8
First there were _______ counters.
Then _______ counters were taken away.
Now there are _______ counters.
15
7
8
15
Fluency
Complete the number sentences.
-
=
8
6
First there were _______ counters.
Then _______ counters were taken away.
Now there are _______ counters.
14
8
6
14
Fluency
Complete the number sentences.
-
=
9
9
First there were _______ counters.
Then _______ counters were taken away.
Now there are _______ counters.
18
9
9
18
Fluency
-
=
8
7
There are 15 cars.
8 of them are blue.
How many are red? _______
15
7
Complete the number sentences.
Fluency
-
=
8
9
There are 17 jumpers.
_______ of them are blue.
8 of them are red.
17
9
Complete the number sentences.
Fluency
-
=
7
5
There are 12 candles.
_______ of them are blue.
7 of them are red.
12
5
Complete the number sentences.
Fluency
-
=
8
9
There are _______ building blocks.
_______ of them are blue.
_______ of them are red.
17
8
Complete the number sentences.
17
17
9
Fluency
-
=
3
8
There are _______ counters.
_______ of them are blue.
_______ of them are red.
11
3
Complete the number sentences.
11
11
8
-
=
9
There are 14 counters.
5 of them are blue.
9 of them are red.
14
The three representations below represent 14 minus 5.
Spot and explain the mistake.
14
5
The part-whole model shows 9 blue and
5 red counters.
It should show 5 blue and 9 red counters.
What other ways can you show the subtraction?
Problem
solving
15
Complete the part-whole model to represent the subtraction .
Lesson 5
Step: Subtraction – Crossing 10 (5)
Fluency
Mo has 12 apples.
Jack has 4 apples.
How many more apples does Mo have? _______
8
12
4
-
=
8
12
4
8
Mo
Jack
Fluency
Tam has 11 pears.
Gina has 3 pears.
How many more pears does Tam have? _______
8
11
3
-
=
8
11
3
8
Tam
Gina
Fluency
Jack has 10 sweets.
Beth has 7 sweets.
How many more sweets does Jack have? _______
3
10
7
-
=
3
10
7
3
Jack
Beth
Fluency
-
=
8
14
6
Dom has 14 cakes.
Ben has _______ cakes.
Dom has 8 more cakes than Ben.
14
6
6
8
Dom
Ben
Fluency
-
=
5
13
8
Che has _______ lollies.
Asha has 8 lollies.
Che has 5 more lollies than Asha.
8
13
13
5
Che
Asha
The bar model shows the following calculation:
True, the bar model shows 14 – 8 = 6.
It also shows 14 – 6 = 8.
14
6
8
-
=
6
14
8
True or false?
Explain your answer.
11 – 4 =
15 – 11 =
The following calculations have been worked out:
What is the question? What is the answer?
(11 – 4) How many more red apples are there?
7
4
(15 – 11) There are 15 apples. 11 are red. How many are green?
Explore a variety of subtraction activities, including fluency exercises, problem-solving tasks, and lesson steps focusing on crossing tens and matching bonds to 10. Engage in visual learning with images illustrating subtraction concepts. Test your skills with interactive exercises using number lines and ten frames. Enhance your understanding of subtraction through practical examples and scenarios.
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Presentation Transcript
Addition & Subtraction Subtraction Crossing 10 (1) Subtraction Crossing 10 (2) Block 1 Week 3
Lesson 1 Step: Subtraction Crossing 10 (1)
Fluency - 12 - 3 = 9 - 3 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency - 16 - 7 = 9 - 7 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
- 14 - 6 = 8 - 6 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency First there were 11 apples. Then 4 were taken away. How many now? 11 - 4 = 7 - 4 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency First there were 17 cherries. Then 9 were taken away. How many now? 17 - 9 = 8 - 9 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency First there were 12 pears. Then 7 were taken away. How many now? 12 - 7 = 5 - 7 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Beth says, The number line represents the subtraction problem. - 4 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Do you agree with Beth? Explain your answer No, the number line shows 13 4 = 9. It should show 13 5 = 8.
Problem solving 12 First there were ______ pencils. Then 7 were taken away. Now there are 5. Show this on ten frames.
Lesson 2 Step: Subtraction Crossing 10 (1)
Recap: Match the bonds to 10. 5 7 2 4 6 8 3 5
Fluency Complete the subtraction using ten frames and a number line. - = 7 12 5 2 3 12 2 = 10 10 3 = 7 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency Complete the subtraction using ten frames and a number line. - = 6 15 9 5 4 10 4 = 6 15 5 = 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency Complete the subtraction using ten frames and a number line. - = 8 14 6 4 2 10 2 = 8 14 4 = 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency Complete the subtraction using ten frames and a number line. - = 9 18 9 8 1 10 1 = 9 18 8 = 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency Complete the subtraction using ten frames and a number line. - = 5 13 8 5 3 10 5 = 5 13 3 = 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency Complete the subtraction using ten frames and a number line. - = 6 11 5 1 4 11 1 = 10 10 4 = 6 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Reasoning The ten frames show 15 6. True or false? Explain your answer. False. The ten frames show 14 7 = 7.
Problem solving Use the counters below to create a subtraction that will give an answer more than 5 but less than 10. ? 13 ? - = List the different combinations. Possible answers: 13 4 = 9, 13 5 = 8, 13 6 = 7, 13 7 =6.
Lesson 3 Step: Subtraction Crossing 10 (1)
Fluency Complete the subtraction using ten frames and a number line. - 3 = 10 13 - 13 6 3 3 10 - 3 = 7 -3 -3 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency Complete the subtraction using ten frames and a number line. - 4 = 10 14 - 14 5 1 4 10 - 1 = 9 -4 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency Complete the subtraction using ten frames and a number line. - 6 = 10 16 - 16 8 2 6 10 - 2 = 8 -6 -2 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency Complete the subtraction using ten frames and a number line. 18 - 8 = 10 - 18 9 8 1 10 - 1 = 9 -8 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency Complete the subtraction using ten frames and a number line. 11 - 1 = 10 - 11 8 1 7 10 - 7 = 3 -7 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Fluency Complete the subtraction using ten frames and a number line. 12 - 2 = 10 - 12 7 2 5 10 - 5 = 5 -5 -2 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Matt says, I had 13 sweets. I gave Gina 6 of them. I still have more sweets than Gina. Is Matt correct? Explain how you know. Matt is correct, he does have more sweets than Gina as 13 6 = 7. Matt has 7 sweets and Gina has 6 sweets.
Problem solving Write a story to represent the subtraction shown on the ten frames. What number sentence represent this? 17 9 = 8 17 7 = 10 10 2 = 8
Lesson 4 Step: Subtraction Crossing 10 (2)
Fluency Complete the number sentences. 11 First there were _______ counters. Then _______ counters were taken away. 6 5 Now there are _______ counters. - 6 = 5 11
Fluency Complete the number sentences. 15 First there were _______ counters. Then _______ counters were taken away. 7 8 Now there are _______ counters. - 7 = 8 15
Fluency Complete the number sentences. 14 First there were _______ counters. Then _______ counters were taken away. 8 6 Now there are _______ counters. - 8 = 6 14
Fluency Complete the number sentences. 18 First there were _______ counters. Then _______ counters were taken away. 9 9 Now there are _______ counters. - 9 = 9 18
Fluency Complete the number sentences. There are 15 cars. 15 8 of them are blue. 7 How many are red? _______ - 8 = 7 15
Fluency Complete the number sentences. There are 17 jumpers. 17 _______ of them are blue. 9 8 of them are red. - 8 = 9 17
Fluency Complete the number sentences. There are 12 candles. 12 _______ of them are blue. 5 7 of them are red. - 7 = 5 12
Fluency Complete the number sentences. There are _______ building blocks. 17 17 _______ of them are blue. 8 _______ of them are red. 9 - 8 = 9 17
Fluency Complete the number sentences. There are _______ counters. 11 11 _______ of them are blue. 3 _______ of them are red. 8 - 3 = 8 11
Reasoning The three representations below represent 14 minus 5. Spot and explain the mistake. 14 There are 14 counters. 5 of them are blue. 9 of them are red. - = 9 14 5 The part-whole model shows 9 blue and 5 red counters. It should show 5 blue and 9 red counters.
Problem solving Complete the part-whole model to represent the subtraction . 15 What other ways can you show the subtraction?
Lesson 5 Step: Subtraction Crossing 10 (5)
Fluency Mo has 12 apples. - = 8 12 4 Jack has 4 apples. 8 How many more apples does Mo have? _______ 12 Mo Jack 4 8
Fluency Tam has 11 pears. - = 8 11 3 Gina has 3 pears. 8 How many more pears does Tam have? _______ 11 Tam Gina 3 8
Fluency Jack has 10 sweets. - = 3 10 7 Beth has 7 sweets. 3 How many more sweets does Jack have? _______ 10 Jack Beth 7 3
Fluency Dom has 14 cakes. 6 Ben has _______ cakes. - = 8 14 6 Dom has 8 more cakes than Ben. 14 Dom Ben 8 6
Fluency Che has _______ lollies. 13 Asha has 8 lollies. - = 5 13 8 Che has 5 more lollies than Asha. 13 Che Asha 8 5
Reasoning The bar model shows the following calculation: - = 6 14 8 14 True or false? Explain your answer. 6 8 True, the bar model shows 14 8 = 6. It also shows 14 6 = 8.
The following calculations have been worked out: 11 4 = 7 15 11 = 4 What is the question? What is the answer? (11 4) How many more red apples are there? (15 11) There are 15 apples. 11 are red. How many are green?
