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
8 × 10 = ______
2 × 10 = ______
38 + 10 = ______
6 × 10 = ______
76 + 20 = ______
68 + 10 = ______
55 + 20 = ______
17 + 20 = ______
56 + 20 = ______
4 × 10 = ______
66 + 10 = ______
90 − 10 = ______
24 − 10 = ______
51 − 10 = ______
84 + 20 = ______
41 − 10 = ______
95 − 10 = ______
21 + 10 = ______
41 + 20 = ______
47 + 10 = ______
