Intensive Training of Decimals(5A)五年级第一学期“小数”强化训练

2024-01-16 05:24焦瑞
疯狂英语·双语世界 2023年4期
关键词:强化训练小数学期

焦瑞

I. Calculation.

(1) 2.25 × 3 =

(2) 1.60 × 15 =

(3) 40.07 × 3.2 =

(4) 63 ÷ 2.5 =

(5) 9.6 ÷ 0.4 =

(6) 4.8 ÷ 1.2 =

II. Calculate and round to one decimal place.

(1) 3.4 × 1.7 ≈

(2) 2.25 × 0.4 ≈

(3) 1.2 × 3.6≈

(4) 2.3 × 4.6 ≈

(5) 3.5 ÷ 2.1 ≈

(6) 8.77 ÷ 0.3 ≈

III. Make verticals.

(1) 30.605 × 43 =

(2) 203.06 × 15.25 =

(3) 80.4272 ÷ 12.04 =

(4) 1805.804 ÷ 50.05 =

IV. Fill in the blanks.

(1) 0.8 × _____ = 2.4

(2) 9.5 ÷ _____ = 2.375

(3) 5.2 × _____ = 15.6

(4) _____ ÷ 5 = 3.6

(5) _____ × 3 = 6.9

(6) 145.92 ÷ _____ = 2.4

(7) 12.6 ÷ _____ = 4.2

(8) _____ ÷ 7.08 = 4.3

V. Word problems.

(1)A box of chocolates costs $4.50, and Sarah buys 3 boxes. How much does she spend in total?

(2)A book costs $12.25, and Emma buys 2 books. How much does she pay?

(3)Susan earns $8.50 per hour, and she works 5.5 hours in a day. How much does she earn for the day?

(4)There are 9.6 feet of ribbon, and Emma wants to cut pieces that are 0.4 feet long. How many pieces can she cut?

(5)Susan has $18, and she wants to buy 2 packs of markers, each costing $3.75. Can she afford them?

(6)If a pizza with a diameter of 50 cm is divided into 8 equal slices, how long is each slice?

(7)Emma walks her dog 2.5 km every day. How many kilometres will she walk in a week?

(8)Lisa has a rectangular garden that is 6.3 m wide and 8.4 m long. What is the area of her garden in square feet?

Keys to Intensive Training of Decimals (5A)

I. (1) 6.75 (2) 24 (3) 128.224 (4) 25.2 (5) 24 (6) 4

II. (1) 5.8 (2) 0.9 (3) 4.3 (4) 10.6 (5) 1.7 (6) 29.2

III. (1) 1316.015 (2) 3096.665 (3) 6.68 (4) 36.08

IV. (1) 3 (2) 4 (3) 3 (4) 18 (5) 2.3 (6) 60.8 (7) 3 (8) 30.444

V. (1) 13.50 (2) 24.50 (3) 46.75 (4) 24 (5) Yes, she can. Because 2 packs of

markers cost 7.5 dollars only. (6) 6.25 (7) 17.5 km. (8) 52.92 m2.

猜你喜欢
强化训练小数学期
小数加减“四不忘”
“三角、数列、平面向量”强化训练
新的学期 新的尝试
我国古代的小数
小数的认识
小数的认识
期末冲刺高二上学期期末模拟卷
空间几何、解析几何强化训练参考答案
空间几何、解析几何强化训练
集合与微积分强化训练