Step-by-step Maths Level 1 Number bonds to 10: check-up and practice test questions

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 2.
   10 and 2
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 2 = 8
3. Write the missing part.
   8

Check. Put the two parts back together: 2 and 8 make 10.

Watch out. The two parts always add up to the whole.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 7.
   10 and 7
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 7 = 3
3. Write the missing part.
   3

Check. Put the two parts back together: 7 and 3 make 10.

Watch out. The two parts always add up to the whole.

Method. The order of the two parts does not change the total.

1. Read the pair. 9 and 1 make 10.
   9 + 1 = 10
2. Turn the pair round. 1 + 9 is the same sum.
   1 + 9 = 10
3. Write the answer.
   10

Check. Count on from 1 to 10 to check. ✓

Watch out. Turning the parts round does not change the total.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 5.
   10 and 5
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 5 = 5
3. Write the missing part.
   5

Check. Put the two parts back together: 5 and 5 make 10.

Watch out. The two parts always add up to the whole.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 3.
   10 and 3
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 3 = 7
3. Write the missing part.
   7

Check. Put the two parts back together: 3 and 7 make 10.

Watch out. The two parts always add up to the whole.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 1.
   10 and 1
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 1 = 9
3. Write the missing part.
   9

Check. Put the two parts back together: 1 and 9 make 10.

Watch out. The two parts always add up to the whole.

Method. Count the counters already there. Then count how many spaces are empty.

1. Count the counters. There are some counters already in the frame.
   2 counters
2. Count the empty spaces. Ten spaces, minus the counters, are empty.
   10 - 2 = 8
3. Write the answer.
   8

Check. 2 counters and 8 more make 10 counters. ✓

Watch out. Count the empty spaces to find the answer, not the full ones.

Method. The bond is the counters already there and the empty spaces.

1. Count the counters. These are one part.
   2
2. Count the empty spaces. These are the other part.
   8
3. Write the bond.
   2 and 8 make 10

Check. 2 + 8 = 10. ✓

Watch out. The empty spaces are the missing part.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 2.
   10 and 2
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 2 = 8
3. Write the missing part.
   8

Check. Put the two parts back together: 2 and 8 make 10.

Watch out. The two parts always add up to the whole.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 7.
   10 and 7
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 7 = 3
3. Write the missing part.
   3

Check. Put the two parts back together: 7 and 3 make 10.

Watch out. The two parts always add up to the whole.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 3.
   10 and 3
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 3 = 7
3. Write the missing part.
   7

Check. Put the two parts back together: 3 and 7 make 10.

Watch out. The two parts always add up to the whole.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 10.
   10 and 10
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 10 = 0
3. Write the missing part.
   0

Check. Put the two parts back together: 10 and 0 make 10.

Watch out. The two parts always add up to the whole.

Method. The order of the two parts does not change the total.

1. Read the pair. 7 and 3 make 10.
   7 + 3 = 10
2. Turn the pair round. 3 + 7 is the same sum.
   3 + 7 = 10
3. Write the answer.
   10

Check. Count on from 3 to 10 to check. ✓

Watch out. Turning the parts round does not change the total.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 4.
   10 and 4
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 4 = 6
3. Write the missing part.
   6

Check. Put the two parts back together: 4 and 6 make 10.

Watch out. The two parts always add up to the whole.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 7.
   10 and 7
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 7 = 3
3. Write the missing part.
   3

Check. Put the two parts back together: 7 and 3 make 10.

Watch out. The two parts always add up to the whole.

Method. Count the counters already there. Then count how many spaces are empty.

1. Count the counters. There are some counters already in the frame.
   9 counters
2. Count the empty spaces. Ten spaces, minus the counters, are empty.
   10 - 9 = 1
3. Write the answer.
   1

Check. 9 counters and 1 more make 10 counters. ✓

Watch out. Count the empty spaces to find the answer, not the full ones.

Method. The bond is the counters already there and the empty spaces.

1. Count the counters. These are one part.
   7
2. Count the empty spaces. These are the other part.
   3
3. Write the bond.
   7 and 3 make 10

Check. 7 + 3 = 10. ✓

Watch out. The empty spaces are the missing part.

Method. Count the counters already there. Then count how many spaces are empty.

1. Count the counters. There are some counters already in the frame.
   9 counters
2. Count the empty spaces. Ten spaces, minus the counters, are empty.
   10 - 9 = 1
3. Write the answer.
   1

Check. 9 counters and 1 more make 10 counters. ✓

Watch out. Count the empty spaces to find the answer, not the full ones.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 5.
   10 and 5
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 5 = 5
3. Write the missing part.
   5

Check. Put the two parts back together: 5 and 5 make 10.

Watch out. The two parts always add up to the whole.

Method. Find the missing part. Ask what goes with the known part to make the whole.

1. Look at the whole and the part you know. The whole is 10 and the known part is 8.
   10 and 8
2. Count on from the known part to the whole. Or take the known part away from the whole.
   10 - 8 = 2
3. Write the missing part.
   2

Check. Put the two parts back together: 8 and 2 make 10.

Watch out. The two parts always add up to the whole.