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
99 − 10 = ______
5 × 10 = ______
19 + 20 = ______
64 − 10 = ______
50 + 10 = ______
3 × 10 = ______
76 + 10 = ______
6 × 10 = ______
9 × 10 = ______
53 + 20 = ______
37 + 10 = ______
27 + 10 = ______
8 × 10 = ______
57 + 10 = ______
1 × 10 = ______
84 + 10 = ______
79 − 10 = ______
21 + 20 = ______
29 − 10 = ______
65 − 10 = ______
