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
43 + 20 = ______
68 + 10 = ______
5 × 10 = ______
81 + 10 = ______
9 × 10 = ______
4 × 10 = ______
3 × 10 = ______
98 − 10 = ______
7 × 10 = ______
54 − 10 = ______
73 + 10 = ______
53 + 20 = ______
36 − 10 = ______
50 + 10 = ______
78 + 10 = ______
38 + 20 = ______
8 × 10 = ______
63 − 10 = ______
88 − 10 = ______
47 + 20 = ______
