3
Nine and one more makes ten
Joyful Mathematics: Chapter 4
GoalSee that 9 and 1 more is 10, using a ten-frame.
New words
ten · the number after nine; 10ten-frame · a box with 10 spaces, 5 in each rowfull · with no space left
Explanation
A ten-frame has 10 spaces. We put one counter in each space. When the frame is full, there are 10. 9 and 1 more make 10. 10 is one more than 9. A full frame is 5 and 5, like the fingers on two hands.
Worked examples
9 counters are blue. 1 counter is orange. 9 and 1 more make 10.
Count 10 stars: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.
On a number line, start at 9. One jump to the right is 10.
Class activity
Ten-frame fun. Draw a ten-frame on paper, two rows of five boxes. Fill it with buttons one by one and count. How many buttons make it full? How many more are needed when there are 7 in it?
Practice
1
How many dots are in the frame?
10.
2
How many more dots will make the frame full?
2.
3
How many flowers are there?
10.
4
What is 1 more than 9?
10.
5
How many fingers are there on both hands?
10.