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
3 × 10 = ______
17 + 20 = ______
45 − 10 = ______
19 + 20 = ______
78 − 10 = ______
94 − 10 = ______
64 + 10 = ______
27 + 10 = ______
66 + 10 = ______
45 + 20 = ______
1 × 10 = ______
7 × 10 = ______
65 + 10 = ______
8 × 10 = ______
76 + 20 = ______
33 + 20 = ______
4 × 10 = ______
98 − 10 = ______
5 × 10 = ______
80 − 10 = ______
