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
23 − 10 = ______
42 + 20 = ______
33 + 20 = ______
30 − 10 = ______
43 − 10 = ______
7 × 10 = ______
58 + 10 = ______
24 + 10 = ______
89 − 10 = ______
8 × 10 = ______
27 − 10 = ______
41 + 20 = ______
36 − 10 = ______
47 + 20 = ______
93 − 10 = ______
49 − 10 = ______
11 + 20 = ______
3 × 10 = ______
64 + 10 = ______
44 + 20 = ______
