UNIT 05 // SESSION A // MASTER WHEN READY
Borrowing with sticks
Name:Date:
This is Unit 4 in reverse. There you traded ten ones for one ten. Here you trade one ten for ten ones.
1Worked example: 52 minus 27
I have 2 ones but I need 7. Not enough.
So I break a bundle. I traded 1 ten for 10 ones.
Now 52 is 4 tens and 12 ones.
12 minus 7 = 5. 4 tens minus 2 tens = 2 tens. Answer: 25
2Build it, break a bundle, then fill in.
63 minus 48 63 becomes tens and ones Answer
71 minus 35 71 becomes tens and ones Answer
45 minus 19 45 becomes tens and ones Answer
84 minus 26 84 becomes tens and ones Answer
60 minus 34 60 becomes tens and ones Answer
92 minus 57 92 becomes tens and ones Answer
3Do you need to break a bundle? Circle YES or NO. Do not work them out.
76 minus 34 YES / NO
52 minus 28 YES / NO
89 minus 45 YES / NO
41 minus 17 YES / NO
4Finish the sentence.
When there are not enough ones, I trade ten for ones.
2. 5/13=15; 6/11=36; 3/15=26; 7/14=58; 5/10=26; 8/12=35 3. NO, YES, NO, YES 4. 1 ten for 10 ones