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
60 − 10 = ______
9 × 10 = ______
38 − 10 = ______
1 × 10 = ______
54 − 10 = ______
41 + 10 = ______
64 − 10 = ______
83 + 20 = ______
6 × 10 = ______
19 + 10 = ______
55 + 20 = ______
35 + 20 = ______
81 + 20 = ______
49 + 10 = ______
86 − 10 = ______
33 + 20 = ______
37 + 20 = ______
4 × 10 = ______
2 × 10 = ______
80 − 10 = ______
