四年級(jí)數(shù)學(xué)強(qiáng)化訓(xùn)練（第一學(xué)期）

河南鄭州市惠濟(jì)區(qū)實(shí)驗(yàn)小學(xué) 張世超

I.Calculate.

6 × 800 =

520 × 30 =

80 × 80 =

35 × 50 =

60 × 30 =

150 × 6 =

4 × 210 =

70 × 90 =

240 ÷ 60 =

640 ÷ 8 =

25 × 40 =

810 ÷ 30 =

8 × 70 =

180 × 70 =

720 ÷ 8 =

42 × 70 =

80 × 50 =

650 ÷ 5 =

125 × 8 =

20 × 35 =

480 ÷ 24 =

560 ÷ 70 =

6 ×230 =

420 ÷ 30 =

II.Write the following numbers in standard form.

560 thousands, 2 hundreds ____________________

430 thousands, 5 hundreds, 4 ones ____________________

320 thousands, 7 hundreds, 8 ones ____________________

700 thousands, 8 tens ____________________

670 thousands, 5 ones ____________________

8,000,000 + 600,000 + 4,000 + 100 ____________________

2,000,000 + 300,000 + 9,000 + 80 ____________________

7,000,000 + 50,000 + 8,000 ____________________

III.Fill in the blanks.

5,973 is ________ when rounded to the nearest hundred.

61,830 is _________ when rounded to the nearest thousand.

__________ is 7 less than 4.

__________ is 8 more than 9.

8 less than 6 is __________.

12 more than 14 is __________.

78,500 = 78 __________ , 5 _________.

80,006 = __________ thousands, __________ones.

________ is 1 more than 999,999 and _______ is 1 less than 999,999.

76,548 = ________ thousands, ________ hundreds, ________

tens, ________ ones.

IV.Use distributive property of multiplication to make the following calculations.

28 × 5 + 22 × 5

(25 + 300) × 4

33 × 17 + 67 × 17

35 × (72 × 2)

(125 × 11) × 8

25 × 5 × 4 × 8

V.Find the value.

[(36 × 120) + (1520 ÷ 95)]–132

784 ÷ 56 + 736 ÷ (288 ÷ 18)

[3692–(54 × 26)] ÷ 16

989–[(65 × 18) + 60] ÷ 15

VI.Solve the problems.

1.The temperature was -8℃.It rises by 10℃.What is the temperature now?

2.A bookstore bought 45 boxes of books.There were 235 books in each box.How many books did the bookstore buy?

3.A company spent ￥ 3,240 on 40 computers.How much did each computer cost?

4.A concert ticket cost ￥ 45 for an adult and ￥ 30 for a student.A total of ￥ 6,075 was collected from the sale of adult tickets and a total of ￥ 4,020 from the sale of students tickets.How many people attended the concert?