Early MathNumber bonds to 5, 10, 20
Name: Date:
1+ = 5
27 + = 20
3+ = 10
419 + = 20
5+ = 10
6+ = 5
Number bonds and make ten worksheets
Number bonds teach that a whole number can be split into two parts and put back together. These free printable worksheets show one known part and ask how many more are needed to make five, ten, or twenty.
Kid stuck on one? You don’t just get the sheet.
Number bonds and make ten
The answer key prints on a separate page.
What's on this sheet
Every question is a complete part-whole relationship rather than two numbers put side by side. Every missing part is positive, every equation adds exactly to its shown target, and a six-question page is balanced across the useful landmark wholes available at the selected level. This keeps make-five and make-ten practice visible even when bonds to twenty introduce more possible combinations.
Why this sheet works
For wholes of five and ten, the known part appears as a small group of themed pictures that a young child can touch and count. The child then fills the one blank to complete the whole. Bonds to twenty switch to a numeral instead of crowding the line with as many as nineteen icons, preserving the same mathematical idea in a cleaner grade-one format.
How this one works
One question from this sheet, worked through a step at a time.
1 and ? make 5
•••••
whole:5
•|••••
1 + 4 =5
4 + 1 =5
5 − 1 =4
5 − 4 =1
0 +5=5
1 +4=5
2 +3=5
3 +2=5
4 +1=5
5 +0=5
- The whole is 5 and it never changes — the two parts just share it out. So this is not really a sum: it is asking what is left of 5 once 1 is taken.
- 1 in one part leaves 4 in the other: 1 and 4 make 5.
- And that one fact is really four: 1 + 4 = 5, 4 + 1 = 5, 5 − 1 = 4, 5 − 4 = 1. Learn the pair and all four come with it.
- Move one across and the other moves the same amount the other way — the whole is fixed, so the parts can only trade. That is why the whole set of bonds for 5 is one thing to remember rather than 6.