Maths | Solving Strategies | Work in Progress

 I used different strategies to solve 5 maths problems.

84-7 was solved using a number line, written algorithm, split subtraction and counting backwards.

On the number line, we added 3 to 77 to make 80. Then we added 4 to make 84. For the split subtraction, we split 7 into 4 and 3. 4 was subtracted from 84 to make 80, then 3 was subtracted to make 77.

476-?=123 was solved using place value, written algorithm and a number line.

On the number line, we added 300 to 123 to make 423. Next we added 50 to make 473. Then we added 3 to make 476. 300+50+3=353. For place value, we subtracted 300 to make 176. Then, we subtraced 50 from 176 to make 126 and lastly, we subtracted 3 from 126 to make 123.

82-44 was solved using split subtraction, written algorithm and a number line.

On the number line, we added 6 to 44 to make 50. Then we added 30 to make 80. Then we added 2 to make 82. 6+30+2=38. For split subtraction, we split 4 into 2 and 2, then subtracted 2 from 82. Next, we subtracted 40 from 80 to make 40. Finally we subtracted 2 to make 38.

I enjoyed this activity because I was able to use multiple strategies to solve maths problems. 

LI: to practice a range of strategies to solve questions using all 4 operations.