Equivalent Equations
Are these two equations equivalent?
23+12 45-12
No because 23+12=35 and 45-12=33
Place this coordinate on the board.
(B, 6)
(B, 6)
Which of these numbers are even:
4, 27, 16, 8, 10, 5, 3
4, 16, 8, 10
Are these two equations equivalent?
35 + 10 25 + 20
Yes they both give 45.
If I have 8 white markers and 4 green markers. Is it possible, certain or impossible to pick a green marker.
What is the coordinate of the diamond?
(f,4)
Match the following equations that have the same answer.
45 -18 36 + 9
55 - 10 47 - 20
45 -18 = 27 36 + 9 = 45
55 - 10 = 45 47 - 20 = 27
Solve the following equation and tell me if you borrowed or carried.
78 - 49
29 This what borrowing.
Is it certain that I will pick a black marble if the bag has black and grey marbles?
No it is possible because we have grey and black marbles.
Place this coordinate on the board.
(g, 3)
g,3
Put the odd numbers in increasing order.
399, 216, 50, 174, 9, 34, 138, 400, 129, 327, 321
9, 129, 321, 327, 399
Solves the following equation and tell me if you borrowed or carried.
46 + 28
74 This is carrying.
Lisa is making cards for Easter for her cousins. She has 3 different colours of paper pink, blue and green and she has 3 different cards. How many combinations can you make.
9
Solve the following equation and tell me if you borrowed or carried.
25 - 9
16 This is a borrowing.
Put the even numbers in decreasing order.
399, 216, 50, 174, 9, 34, 138, 400, 129, 327, 321
400, 216, 138, 50, 34,