Algebra Break Apart Ones To Subtract

Lesson 5.1ReteachNameAlgebra Break ApartOnes to SubtractTo subtract a one-digit number,break it apart.44 - 7 —   ?Break apart ones in 7. U se 4 because 44 hasa 4 in the ones place. The other part is 3. 43Start at 44.Subtract 4, and then subtract 3.-3-430 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50So,44 - 7 —   37 . Break apart ones to subtract. Write the difference.30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 501.42 - 8 — 2.3.43 - 5 —Reteach Houghton Mifflin Harcourt Publishing Company47 - 8 —4.R4541 - 8 —Grade 2

Lesson 5.2ReteachNameAlgebra Break ApartNumbers to SubtractTo subtract a two-digit number, break it apart.54 - 16 —   ?First break apart 16 into tens and ones. Now break apart ones in 6. U se 4 because 54 has a 4 in the ones place. The other part is 2.104Use the number line to subtract the three parts.-235 36So,37 38 39 40-44162-1042 43 4445 464748 49 505152 53545554 - 16 —   38 . Break apart the number you are subtracting.Write the difference.30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 601.51 - 16 — 2.3.54 - 17 — Reteach Houghton Mifflin Harcourt Publishing Company57 - 18 — 4.R4652 - 18 — Grade 2

Lesson 5.3ReteachNameModel Regroupingfor SubtractionSubtract 37 from 65.TensnoOnesAre there enough ones to subtract 7? —So, you will need to regroup.Trade 1 ten for 10 ones.Subtract the ones. Then subtract the tens.TensOnes8 ones15 ones - 7 ones —5 tens - 3 tens               tens—2   2 tens —   8 ones is the same as   28 .——28 .The difference is —Draw to show the regrouping. Write thetens and ones that are in the difference.Write the number.2. Subtract 19 from 55.1. Subtract 18 from 43.TensOnesTens Houghton Mifflin Harcourt Publishing Company ones— tens — — ones— tens — —ReteachOnesR47Grade 2

Lesson 5.4ReteachNameModel and Record2-Digit SubtractionTensSubtract. 54 -    15OnesTensB BAre there enoughones to subtract 5?               —noTensRegroup 1 ten as 10 ones.5- 145TensOnesOnesBB4 14Write the new numberof tens and ones.5- 1TensSubtract the ones.OnesOnesTens45Ones4 B14B914 ones - 5 ones ones—Write that number in the ones place.Subtract the tens.4 tens - 1 ten               tens—Write that number in the tens place.5- 145393Draw a quick picture to solve. Write the difference.1.TensOnesB B4- 1TensOnes2.36Reteach Houghton Mifflin Harcourt Publishing CompanyTensB B3- 1R48OnesTensOnes17Grade 2

Lesson 5.5ReteachName2-Digit SubtractionSubtract.   54 -   28TensOnesTens OnesB B5- 2Are there enoughones to subtract 8?               —noRegroup 1 ten as 10 ones.TensOnesTens OnesBB4 14Write the new numberof tens and ones.Subtract the ones.5- 2Tens648Ones48Tens Ones144 BB ones14 ones - 8 ones —Write that number in the ones place.5- 2486Subtract the tens.Tens2OnesTens Ones144 BB4 tens - 2 tens               tens—Write that number in the tens place.5- 24826Regroup if you need to. Write the difference.1.TensOnesB B7- 425Reteach Houghton Mifflin Harcourt Publishing Company2.TensOnesB B5- 1R49133.TensOnesB B3- 186Grade 2

Lesson 5.6ReteachNamePractice 2-Digit SubtractionClay scored 80 points. Meg scored 61 points.How many more points did Clay score than Meg?STEP 1STEP 2STEP 3More ones are needed.Regroup 8 tens 0 onesas 7 tens 10 ones.Subtract in theones column.Subtract in thetens column.7 B10B8/267 B10B7 B10B0/18260182601919Write the difference.1.2.   6 02274.3.5.   7 0226Reteach Houghton Mifflin Harcourt Publishing Company   6 1248   3 72226.   3 7219R50   5 5214Grade 2

Lesson 5.7ReteachNameRewrite 2-Digit Subtraction62 - 38 ?Rewrite 62 first.62Then rewrite 38.-3862TensOnes62B BThe 8 is in theones place.Write it in theones column.The 3 is in thetens place.Write it in thetens column.OnesB BThe 2 is in theones place.Write it in theones column.The 6 is in thetens place.Write it in thetens column.Tens- 3Now the ones digits are in a columnand the tens digits are in a column.8TensOnesBB5 12Subtract. Write the difference.6- 32824Rewrite the subtraction problem. Find the difference.1.56 - 24Tens2.74 - 37OnesTensB BReteach Houghton Mifflin Harcourt Publishing Company3.43 - 15OnesTensB B-OnesB B-R51Grade 2

Lesson 5.8ReteachNameAdd to Find DifferencesCount up to solve. 34 – 27 ?Start at 27. Count up 3 to 30. 320 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40To get to 34 from 30, count up 4 more. 4 320 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40So, 347 was addedto get to 34. 7 .- 27 — Count up to find the difference.1.41 - 37 — 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 502.43 - 38 — 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50Reteach Houghton Mifflin Harcourt Publishing CompanyR52Grade 2

Lesson 5.9ReteachNameProblem Solving SubtractionKatie had a box of 42 craft sticks. She used 26 craft sticksto make a sailboat. How many craft sticks were not used?Unlock the ProblemWhat do I need to find?What information doI need to use?sticks  how many craft ————were not used42 craft sticks26 craft sticksKatie had .———She used .———Show how to solve the problem.craft sticksused1626craft sticksnot used42craft sticks in all42 – 26 j   16 — craft sticksWrite a number sentence witha j for the missing number. Solve.1. Ms. Lee took 35 purses to the fair.She sold 14 purses. How manypurses does she have left?14?35 purses  —Reteach Houghton Mifflin Harcourt Publishing CompanyR53Grade 2

Lesson 5.10ReteachNameAlgebra Write Equationsto Represent Subtraction37 birds were in the trees.13 birds flew away.How many birds are in the trees now?The bar model shows the problem.13?37Use the bar model to write a number sentence.37 – 13 jSubtract to find the missing part.37 - 13 24So, the answer is —   24 birds.Write a number sentence for the problem.Use a j for the missing number. Then solve.1. Gina has 23 pens. 15 pens are?15blue and the rest are red. Howmany pens are red?23— red pensReteach Houghton Mifflin Harcourt Publishing CompanyR54Grade 2

Lesson 5.11ReteachNameSolve Multistep ProblemsMr. Wright had 34 blue pencils and 25 red pencils.He gave 42 pencils to students. How many pencilsdoes he have now?The first sentence tells you what Mr. Wright had.andblue pencilsred pencils   34 25 59The second sentence tells you that he gave42 of the pencils to students.   59 - 42 17pencilsMr. Wright has —   17 pencils now.Solve the problem in steps. Show what you did.1. Kara had 37 stickers. She gave11 stickers to Sam and 5 stickersto Jane. How many stickers doesKara have now?stickers —Reteach Houghton Mifflin Harcourt Publishing CompanyR55Grade 2

Reteach R46 Grade 2 Lesson 5.2 Reteach Algebra Break Apart Numbers to Subtract To subtract a two-digit number, break it apart. First break apart 16 into tens and ones. Now break apart ones in 6. Use 4 because 54 has a 4 i