Addition
320 + 241 =
Use a Tree Diagram to solve.
500 + 60 + 1 = 561
45 -28 =
Use tree diagram
17
34 + 41 + 52 =
128
5x6
30
612
543 + 236 =
Use a number line to solve
700 + 70 + 9 =
539 - 421 =
use compose and decompose
118
234 - 103 -50 =
81
27
use lattice to solve 36x17
612
822 + 164 =
Use compose and Decopose to solve
900 + 80 + 6 = 986
564 - 237 =
Use Left to right Partial Sums to Solve
327
Please show me what 5x4 means, Dram a picture!
3x10
30
use lattice to solve 432x85
36720
375 + 517 =
Use standard Alg to show
800 + 80 + 12 = 892
377 - 256 =
Use standard alg to solve
121
Please show me what 20/5 looks like.
6x3
18
use lattice to solve 432x85
36,720
667 + 253 =
use base ten to solve
800 + 110 + 10 = 920
459 -254 =
use base ten to solve
204
Please show me what 21/7 looks like
It should look like 7 groups of 3.
200x3
600
42x 16 try standard alg
672