Math Review

Ways to Show a Number

100

Show 235 in expanded form.

200+30+5

200

Show 460 in unit form. 

4 hundreds 6 tens

300

Show three hundred fifty five in standard form

355

400

Show 678 in written form.

six hundred seventy-eight

500

Show 9 tens 8 hundreds 3 ones in standard form.

893

Addition

100

73+15=

88

200

86+100=

186

300

86+66=

152

400

39+64+75=

178

500

158+69=

227

Subtraction

100

83-10=

73

200

283-100=

183

300

99-25=

74

400

176-46=

130

500

207-38=

169

Word Problems

100

Jon had 78 pieces of candy. He ate 55 pieces of candy. How many pieces does he have left?

78-55=23

200

Susie collected 58 seashells. Her sister collected 66 seashells. How many seashells did they have altogether?

58+66=124

300

Bob wanted to collect 152 stamps. He has 78 stamps collected. How many more stamps does he need to get to 152?  

152-78= 74

78+?=152

400

Part 1: Cathy's classroom had 6 more chairs than Joe's classroom. Joe's classroom had 33 chairs. How many chairs does Cathy's classroom have?  

Part 2: Bob's classroom has 4 less chairs than Cathy's classroom. How many chairs does Bob's classroom have?

Part 1: 33+6=39

Part 2: 39-4=35

500

Part 1: Jenny collected 55 more stamps than her sister Beth. Beth has 33 stamps. How many stamps did Jenny collect?

Part 2: Anja collected 15 more stamps than Jenny. How many stamps did Anja collect?

Part 1: 55+33=88

Part 2: 88+15=103

Mix addition/subtraction

100

152-65=

87

200

168+48=

216

300

258-65=

193

400

204+54=

258

500

298-79=

219