Reception Maths Taking away within 10: check-up and practice test questions

Key words. Take away means some are removed. The sign − means take away.

Method. Start with all of them. Take away the ones that go, then count what is left.

1. Start with 6. Count all the things first.
   6 in all
2. Take away 2. Cross out the ones that are taken away.
   6 − 2
3. Count what is left. Count only the ones that are not crossed out.
   4 left
4. Write the answer.
   4

Check. Add them back: 4 + 2 = 6. ✓

Watch out. Count only what is left. Do not count the crossed out ones.

Key words. Count back means count down, one number at a time.

Method. Start at 9 and count back 2. The number you reach is the answer.

1. Start at 9. Start with the number you have.
   9
2. Count back 2. Each number is one less than the one before.
   8, 7
3. Look at the last number you said. It is the answer.
   7
4. Write the answer.
   7

Check. Count on 2 from 7: you reach 9. ✓

Watch out. Count back one at a time. Do not count the starting number again.

Key words. The minus sign − means take away.

Method. Write the first number, the minus sign, the second number, the equals sign and the answer.

1. Write the first number. This is the number we start with.
   8
2. Add the minus sign and the number taken away. The minus sign means take away.
   8 − 3
3. Add the equals sign and the answer. The equals sign means is the same as.
   8 − 3 = 5
4. Write the answer.
   8 − 3 = 5

Check. Check by adding back: 5 + 3 = 8. ✓

Watch out. Write the minus sign between the two numbers, not a plus sign.

Key words. Take away means some are removed. The sign − means take away.

Method. Start with all of them. Take away the ones that go, then count what is left.

1. Start with 10. Count all the things first.
   10 in all
2. Take away 4. Cross out the ones that are taken away.
   10 − 4
3. Count what is left. Count only the ones that are not crossed out.
   6 left
4. Write the answer.
   6

Check. Add them back: 6 + 4 = 10. ✓

Watch out. Count only what is left. Do not count the crossed out ones.

Method. Start at 7. Count back until you reach 5. The number of steps is the missing number.

1. Start at 7. That is the number we start with.
   7
2. Count back to 5. Count each step as you go down.
   6, 5
3. Count the steps. The number of steps is the missing number.
   2 steps
4. Write the answer.
   2

Check. Check: 5 + 2 = 7. ✓

Watch out. Count the steps, not the numbers you say.

Method. Count back from 10 to 7. Each number is one less than the one before.

1. Start at 10. Start with the biggest number.
   10
2. Count back to 7. Say each number, one less each time.
   10, 9, 8, 7
3. Write the numbers. Include the first and last numbers.
   10, 9, 8, 7

Check. Count on from 7 to 10 to check. ✓

Watch out. Do not skip a number when you count back.

Method. The minus sign tells us to take away.

1. Look at the sign. It is −.
   −
2. Think about what it means. Some things are removed.
   take away
3. Write the answer.
   Take away

Check. In 4 − 1, we take 1 away from 4. ✓

Watch out. The minus sign does not mean add.

Method. Check your answer by adding the take-away number back on.

1. Find the answer: 9 − 6. Take away and count what is left.
   3
2. Add the number taken away. If you added it back, you should get the start again.
   3 + 6 = 9
3. Write the answer.
   3

Check. The check works: 3 + 6 = 9. ✓

Watch out. If the check does not give the start number, count again.

Key words. Take away means some are removed. The sign − means take away.

Method. Start with all of them. Take away the ones that go, then count what is left.

1. Start with 8. Count all the things first.
   8 in all
2. Take away 5. Cross out the ones that are taken away.
   8 − 5
3. Count what is left. Count only the ones that are not crossed out.
   3 left
4. Write the answer.
   3

Check. Add them back: 3 + 5 = 8. ✓

Watch out. Count only what is left. Do not count the crossed out ones.

Method. Add the number taken away to the answer.

1. Look at the answer, 7. That is what is left.
   7
2. Add back the 3. Adding back should give the start.
   7 + 3
3. Check the total. The total is 10, the start number.
   7 + 3 = 10
4. Write the answer.
   Accept any answer: 7 + 3 = 10, so 10 − 3 = 7 is right.

Check. Adding back gives the start number. ✓

Watch out. Check by adding back.

Key words. Take away means some are removed. The sign − means take away.

Method. Start with all of them. Take away the ones that go, then count what is left.

1. Start with 7. Count all the things first.
   7 in all
2. Take away 2. Cross out the ones that are taken away.
   7 − 2
3. Count what is left. Count only the ones that are not crossed out.
   5 left
4. Write the answer.
   5

Check. Add them back: 5 + 2 = 7. ✓

Watch out. Count only what is left. Do not count the crossed out ones.

Key words. The minus sign − means take away.

Method. Write the first number, the minus sign, the second number, the equals sign and the answer.

1. Write the first number. This is the number we start with.
   6
2. Add the minus sign and the number taken away. The minus sign means take away.
   6 − 1
3. Add the equals sign and the answer. The equals sign means is the same as.
   6 − 1 = 5
4. Write the answer.
   6 − 1 = 5

Check. Check by adding back: 5 + 1 = 6. ✓

Watch out. Write the minus sign between the two numbers, not a plus sign.

Method. Start at 10. Count back until you reach 6. The number of steps is the missing number.

1. Start at 10. That is the number we start with.
   10
2. Count back to 6. Count each step as you go down.
   9, 8, 7, 6
3. Count the steps. The number of steps is the missing number.
   4 steps
4. Write the answer.
   4

Check. Check: 6 + 4 = 10. ✓

Watch out. Count the steps, not the numbers you say.

Method. Use the addition fact to find the take-away answer.

1. Look at 5 + 2 = 7. Two was added to 5 to make 7.
   5 + 2 = 7
2. Take 5 away from 7. Taking away the 5 leaves the 2.
   7 − 5 = 2
3. Write the answer.
   2

Check. Add back: 2 + 5 = 7. ✓

Watch out. The addition fact helps you check take away.

Key words. The minus sign − means take away.

Method. Write the first number, the minus sign, the second number, the equals sign and the answer.

1. Write the first number. This is the number we start with.
   9
2. Add the minus sign and the number taken away. The minus sign means take away.
   9 − 4
3. Add the equals sign and the answer. The equals sign means is the same as.
   9 − 4 = 5
4. Write the answer.
   9 − 4 = 5

Check. Check by adding back: 5 + 4 = 9. ✓

Watch out. Write the minus sign between the two numbers, not a plus sign.

Key words. Take away means some are removed. The sign − means take away.

Method. Start with all of them. Take away the ones that go, then count what is left.

1. Start with 6. Count all the things first.
   6 in all
2. Take away 2. Cross out the ones that are taken away.
   6 − 2
3. Count what is left. Count only the ones that are not crossed out.
   4 left
4. Write the answer.
   4

Check. Add them back: 4 + 2 = 6. ✓

Watch out. Count only what is left. Do not count the crossed out ones.

Method. Count back 3 from 8 and check by adding.

1. Start at 8. That is the number we start with.
   8
2. Count back 3. Count each step down.
   7, 6, 5
3. Check by adding. Five and three make 8.
   5 + 3 = 8
4. Write the answer.
   No. 8 − 3 = 5. Five and three make 8.

Check. Count back 3 from 8: you reach 5. ✓

Watch out. Check by adding back the number taken away.

Method. Count back from 10 to 6, then check by adding.

1. Start at 10. That is how many pencils she started with.
   10
2. Count back to 6. Count each step down.
   9, 8, 7, 6
3. Count the steps. Four steps were taken away.
   4
4. Write the answer.
   4. Check: 6 + 4 = 10.

Check. 6 + 4 = 10, the start number. ✓

Watch out. Count the steps, not the numbers.

Method. Start at the number you have and count down.

1. Start at the bigger number. That is what you start with.
   7
2. Count back. Say each number one less each time.
   6, 5
3. Say the last number. That is the answer.
   5
4. Write the answer.
   Accept any answer: start at the bigger number, count back the number taken away, and say the last number.

Check. 7 take away 2 is 5. ✓

Watch out. Count back one at a time.

Method. Take away 3 from 5 and count what is left.

1. Start with 5. That is how many cubes Lily has.
   5
2. Take away 3. Cross out 3 cubes.
   5 − 3
3. Count what is left. Count the cubes that are not crossed out.
   1, 2
4. Write the answer.
   2. Five take away three leaves two, because 2 + 3 = 5.

Check. Add back: 2 + 3 = 5. ✓

Watch out. Count only what is left.