fbpx
KS2 SATs Flash Cards

KS2 SATs Flash Cards

  • Over 100 KS2 Exam Style questions and answers
  • Arithmetic and reasoning sections covered
  • Exact same format as the exam
Buy Buy this product on Amazon Buy this product on Amazon

What you need to know

Things to remember:

  • To make addition and subtraction easier we can split our numbers into hundreds, tens and units.

Let’s see how we can split our numbers into hundreds, tens, and units to make addition easier.

24+2=20+4+2=20+6=26

313+5= 300+10+3+5=300+10+8=318

We can do the same for tens and hundreds:

356+40=300+50+6+40=300+50+40+6=300+90+6=396

219+300=200+10+9+300=200+300+10+9=500+10+9=519

Just because, sometimes when we add our units will become tens, and tens will be come hundreds!

356+60= 300+50+6+60=300+50+60+6=300+110+6=416

We can do subtractions in the exact same way!

218 - 4 = 200 + 10 + 8 - 4=200+10+4=214

256 - 20 = 200 + 50 +6-20=200 + 50 - 20 +6 = 200+30+6=236

299-100=200+90+9-100=200-100+90+9=100+90+9=199

Sometimes we need to be careful with subtractions as well. If the number we are taking away is bigger, we need to “borrow 1” from the bigger number.

532-70=500 + 30 - 70 + 2 = 400 + 130-70 +2=400+60+2=462

Example Questions

425+300=400 + 20 + 5 + 300 = 400+300+20+5=700+20+5=725

So, the answer is 725.

265-90=200+60-90+5=100+160-90+5=100+70+5=175

Need some extra help? Find a Maths tutor now

Or, call 020 3633 5145