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
49 + 10 = ______
32 + 10 = ______
62 − 10 = ______
84 − 10 = ______
9 × 10 = ______
6 × 10 = ______
55 + 10 = ______
70 + 10 = ______
51 + 20 = ______
26 + 10 = ______
76 − 10 = ______
67 − 10 = ______
57 − 10 = ______
85 + 20 = ______
27 + 20 = ______
35 + 20 = ______
47 − 10 = ______
21 + 10 = ______
28 + 20 = ______
4 × 10 = ______
