Addition
332 + 178
510
what does it mean to compose?
making a ten out of 10 one or
making a 100 out of 10 tens.
To put together.
98 - 49 =
49
Mario picks 58 apples. Mini picks 75 apples. How many more apples does Mini have ?
Mini has 17 more apples.
2 x 5 =
2 x 5 = 10
162 + 345 =
507
What does it mean to decompose?
To break apart.
To break apart a ten into 10 ones.
to break apart a hundred into 10 tens.
276 - 195 =
81
Dilan has 112 marbles and Victor has 79 marbles. How many fewer marbles does a Victor have?
Victor has 33 fewer marbles.
2 x 6 =
2 x 6 = 12
519 + 399 =
918
How many more?
Compare
Subtract
To find the difference.
573 - 267 =
306
Ms.Pacheco bought 134 munchkins and Ms. Robys bought 89 munchkins. How manny munchkins do they have in all?
Ms Pacheco and Ms. Robys have 223 munchkins in all.
2 x 8 =
2 x 8 = 16
99 + 99 =
198
How many less?
Compare
To find the difference.
Subtract
612 -254 =
358
Eslianni has 537 bracelets and Camila has 359 bracelets how many more bracelets does Eslianni
have ?
537 - 359 =
Eslianni has 178 bracelets.
2 x 9 =
2 x 9 =18
1,035 + 99 =
1,134
Expanded Form
Breaking a part a number to show the value of each number according to its place value.
935 - 846 =
89
The blue soccer team won 955 dollars and the red soccer team won 259 dollars/. How much money did they win in all?
955 + 259 =
The teams won 1,214 dollars in all.
2 x 10 =
2 x 10 = 20