Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
77 − 10 = ______
81 + 10 = ______
70 + 10 = ______
45 + 10 = ______
79 + 10 = ______
78 − 10 = ______
28 + 20 = ______
30 + 10 = ______
88 − 10 = ______
7 × 10 = ______
8 × 10 = ______
73 + 20 = ______
13 + 20 = ______
24 − 10 = ______
28 − 10 = ______
1 × 10 = ______
82 + 20 = ______
57 + 20 = ______
70 − 10 = ______
3 × 10 = ______
