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
38 + 20 = ______
2 × 10 = ______
84 + 20 = ______
87 + 20 = ______
37 + 10 = ______
70 + 10 = ______
7 × 10 = ______
62 + 20 = ______
24 − 10 = ______
6 × 10 = ______
62 − 10 = ______
43 + 10 = ______
8 × 10 = ______
9 × 10 = ______
76 + 10 = ______
20 + 20 = ______
38 − 10 = ______
29 − 10 = ______
41 − 10 = ______
27 + 20 = ______
