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Meanings of mental math in English

Russian
устный счёт
Portuguese
cálculo mental
Spanish
cálculo mental
Catalan
càlcul mental
Wikidata

Arithmetical calculations using only the human brain.

устный счёт
Usage of mental math in English
1
Tourville squinted against his cigar smoke while he did the mental math.
In Enemy Hands
2
That was before he started his first salon. I did some mental math.
The brush-off: a hair-raising mystery
3
Using mental math, I calculated that that was over four hundred miles per tank.
Beyond exile: day by day armageddon
4
Irina does mental math, and calculates she'll be forty when the baby is nineteen.
Real life & liars
5
He did a little mental math.
Shadow fall
6
I did some mental math.
Small favor
7
He did some mental math.
Break No Bones
8
Hope glanced at the clock on the kitchen wall and did some mental math, taking into account the horsepower in Gideon's Challenger.
Sanctuary
9
After this came Arthur Benjamin's mental math session, which got rave reviews from people walking out just as I finally arrived in San Diego.
Wired
10
"I dunno," Amos replied, his lips compressing as he did the mental math.
Leviathan Wakes
11
"I'm glad you did," Ranjit said slowly, but his eyes had darkened as he did the mental math.
Worlds of Honor
This collocation consists of:
Translations for mental math
Portuguese
cálculo mental
Mental math across language varieties
United States of America
Common