J 3u
R u
S 3u+42
3u+u+3u+42= 266
7u+42= 266
7u= 266-42= 224
u= 32
Sam->3u+42= 96+42=138
6 years ago
Jessica sica
Regan = x
Joy = 3x
Sam = 3x + 42
x + 3x + 3x + 42 = 266
7x + 42 = 266
7x = 266 - 42 = 224
x = 224 / 7 = 32
Sam = 3(32) + 42 = 96 + 42 = 138
6 years ago
Wahidah Khan
model method
6 years ago
Soo Vei Li
For students who haven't learnt algebra or need a visual model...
6 years ago
Xavier Sng
Hello Tjoa. This is referring to the working shown for question 10, which you did not ask. I would like to illustrate number bonds to 10s to help make the calculation a wee bit easier. Regards
6 years ago
Tjoa A Em
Wah thanks for advice Xavier Sng:)
6 years ago
Xavier Sng
The pleasure is all mine. Regards
6 years ago
Don Wee
Asked 9 years ago
SG
chevron_right
Primary 6
chevron_right
Number and Algebra