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
33 + 20 = ______
83 + 10 = ______
43 + 10 = ______
50 − 10 = ______
33 + 10 = ______
40 − 10 = ______
9 × 10 = ______
51 + 10 = ______
24 − 10 = ______
74 + 20 = ______
35 − 10 = ______
32 + 10 = ______
55 + 20 = ______
23 + 10 = ______
5 × 10 = ______
42 − 10 = ______
31 + 10 = ______
31 − 10 = ______
8 × 10 = ______
6 × 10 = ______
