Watch the video.
Remember to break up the second number into ones and tens.
Subtract the ones first, then the tens.
Question | Working Out | Answer |
78-43 = | 78-43=? 70-40=30 8-3=5 | 35 |
186- 24 = | 186-24=? 80-20=60 6-4=2 | 162 |
186-43= | 186-43=? 80-40=40 6-3=3 | 143 |
172- 51 = | 172-51=? 70-50=20 2-1=1 | 121 |
129- 18= | 129-18=? 20-10=10 9-8=1 | 111 |
179- 41 = | 179-41=? 70-40=30 9-1=8 | 138 |
186- 25= | 185-25=? 80-20=60 6-5=1 | 161 |
142-31= | 142-31=? 40-30=10 2-1=1 | 111 |
158-48= | 158-48=? 50-40=10 8-8=0 | 110 |
184-29= | 184-29=? 80-20=60 9-4=5 | 165 |
183 - 44 = | 183-44=? 80-40=40 3-4=1 | 141 |
180-61 = | 180-61=? 80-60=20 0-1=1 | 121 |
174-65= | 174-65=? 70-60=10 5-4=1 | 111 |
143-50= | 143-50=? 40-50=10 3-0=3 | 113 |