Fifth grade math test questions and answers Examination time: 90 minutes Full score: 120 points Name: Results:
Title 12345 Volume level
First, calculate.
1, write the number directly (12 points)
4.7+2.5=7.2 2.5? 4= 10 6.3? 0.2= 3 1.5 2.4? 0.08=30
6.5-5.6= 0.9 0? 12.5=0 5.6? 8= 0.7 3.5? 0.2=0.7
23.7? 1= 23.7 1? 9.9= 9.9 2.8? 0.4= 7 9.7-3.4=6.3
2. Calculate vertically (9 points) (keep two decimal places for the last question)
4.08? 3.4= 1.2 0.38? 0.25=0.095 46.4? 13? 3.57
3. Calculate the following questions, which can be simplified (16)
6.4? 0.8- 1.5? 4 1.9? 2.34+ 1.9? 7.66
=8-6 = 1.9? (2.34+7.66)
=2 = 1.9? 10= 19
1.25? 64 17? [( 1.2+0.5)? 5]
= 1.25? 8? 8 = 17? [ 1.7? 5]
= 10? 8 = 17? 8.5
=80 =2
4. Solve the equation: (16 points) (choose a writing inspection process)
x+0.82﹦8.2 3+0.5x﹦7
Solution: x+0.82-0.82-8.2-0.82 solution: 3+0.5x-3-7-3.
X=7.38 0.5x﹦ 4
X=8
1.2x = 0.84 35x+ 13x = 9.6
Solution: x=0.7 solution: 48x=9.6
X-0.2
Two, fill in a fill (14 points)
1、2.48? The product of 0.9 has (3) decimal places; 0. 126? The product of 1.7 has (4) decimal places.
2. According to 134? 0.3=40.2, and fill in the appropriate figures in brackets.
13.4? 3=(40.2 ) 1.34? 0.3=(0.402 )
3. Fill in ○? & gt& lt=?
3 1.5? 0.9 & lt3 1.5 5.42? 0.9 & gt5.42 0.98? 1=0.98
2.5? 0.8 & lt2.5? 0.8 3.56? 1.0 1 & lt； 3.56 4.95? 1=4.95
4、 10? The quotient of 6 is expressed as (1. ) with a circulating decimal, and the two decimal places are (1.67).
5、2.5? 1.9? 4=2.5? 4? 1.9
32? 10. 1=32? ( 10+0. 1)=32? 10+32? 0. 1
6.9.929292 One digit after the decimal point is (9.9); Keep two decimal places is (9.93); The reserved integer is (10).
Choose one (fill in the serial number of the correct answer in brackets. )
(10)
1. The figure with two symmetry axes in the following figure is (b)
A, B, C, D,
2. Will it be 8.65? The product of 0.3 retains two decimal places, and the correct one is (a)
a、2.60 B、2.6 C、2.59 D、2.595
3. The following numbers are cyclic decimal (A) and infinite decimal (C).
a、 1.070707 B、6.282828 C、3. 14 15926
4, in the following categories, the smallest product is ()
a、7.8？ 0. 12 B、0.78？ 12 C、780？ 0.0 12
Four, draw a picture (6 points)
1. Draw the other half of the graph below to make it axisymmetric.
2. Turn the triangle in the figure clockwise around point A by 90?
Five, I will solve practical problems (32 points)
1, the electricity price of residents in a city is 0.62 yuan per kwh. Xiaoming's family paid 40.3 yuan for electricity last month. What is the electricity in Xiaoming's house? (4 points)
Solution: let Xiaoming's household electricity x kWh.
0.62x=40.3
X=65
A: Xiaoming's household electricity is 65 degrees.
2. A double-decker bus * * * carries 5 1 person, and the lower passengers are twice as many as the upper passengers. How many passengers are there on the upper and lower floors? (5 points)
Solution: Suppose there are x passengers on the upper floor, then there are 2x passengers on the lower floor.
X+2x=5 1
X= 17
2x=34
A: There are 17 passengers on the upper floor, so there are 34 passengers on the lower floor.
3. A sweater 2 10 yuan, the price of a coat is more than twice that of this sweater, 98 yuan. How much is this coat? (5 points)
2 10 ? 2+98
=420+98
=5 18 (yuan)
This coat cost 5 18 yuan.
4. My mother bought 2.6 kilograms per kilogram of melons in 7.5 yuan and gave the shop assistant 20 yuan money. How much should I get back? (5 points)
20-7.5? 2.6
=20- 19.5=0.5 (yuan) A: 0.5 yuan should pay back the money.
5.( 1) It takes 75g of cream to make a cream cake. How many cakes can 500 grams of cream make? (8 points)
500 ? 75? 6 (pieces)
You can make up to six such cakes.
(2) Kindergarten bought 50 cream cakes, and every 6 cakes were packed in a box. How many boxes should I use at least?
50? 6? 9 (pieces)
A: At least 6 boxes should be used.
6. Military dogs have strong endurance and fast running speed. A military dog can run 89.6 kilometers in 3.5 hours. How many kilometers do you run per hour on average? (5 points)
89.6 ? 3.5=25.6 km
How many kilometers do you run per hour on average?