Class name score

First, "clever calculation" is right and clever: (***3 1)

1. Numbers written directly: (5 points)

27 ×2 = 35 × 1 = 34 × 13 = 12×34 = (23)3=

528 ×7= 45 ×47 = 5-37 = 724 ×3 14 = 16 +56 × 15 =

2. Use your favorite method to calculate: (18 points)

14 +34 × 13 57 × 14 +34 ×57 13 +47 +23 + 17

45 ×38 ×59 ( 14 + 15 )×4×5 27×59 - 1 1

10 1× 17 - 17 647 ×48 17 ×34×7×2 17

3. Column calculation (***8 points)

(1) What is the 34 of 89?

(2) What is the sum of the difference between13 and 14 plus their products?

(3) What's the difference between 37 and 78 of 724?

(4) What is the product of 9 and its reciprocal multiplied by 79?

Two. Fill in "sign in": ((**30 points)

(1) 45× 7 means (); 8×34 means ().

35 hours = () minutes 58 kg = () grams.

125m2 = () square decimeter 34m = () decimeter

(3) The reciprocal of the smallest prime number is (), the reciprocal of 0.25 is (), and the reciprocal of 73 is ().

(4) The number of boys in the sixth grade is 7 10 of the number of girls, so the number of boys accounts for as much as () () of the whole grade.

5] A pile of sand weighs 15 16 tons, with 25 tons used and () tons used, leaving a total of () ().

[6] Fill in ""or "=" in ○.

67×59×67 58×75×58 65×34×65 5m 16× 1m 56

(7) There are as many as 37 peach trees in citrus reticulata, which means that () is considered as "1". If there are 28 orange trees, there are () peach trees.

Being a batch of parts can be completed in 4 hours, then () hours can complete 34 batches of parts.

⑼ 16 ×( )=7 13 ×( )= 17 13 -( )=( )×0.3 = 1

At the beginning of the new semester, students should choose a squadron leader. Of the 60 people who participated in the election, 35 agreed that Xiaoming was elected, 7 10 agreed that Xiaohong was elected, and 56 agreed that Xiaodong was elected. The one with the least votes is (), not ().

⑾ As shown in the figure, it is a pile of disks. If 34 disks are painted red, then () disks need to be painted red; If you take 4 disks and color the remaining 34 disks red, you need to color () disk red.

⑿ It is known that A× 67 = B× 65 = 55× C, where A, B and C are natural numbers and none of them are, and the numbers A, B and C are arranged in descending order: ()